The material described by Li10Si(PSe6)2 crystallizes in the triclinic P1 space group. There are twenty inequivalent Li sites. In the first Li site, Li(1) is bonded to one Se(10), one Se(17), one Se(3), one Se(4), and one Se(9) atom to form distorted LiSe5 square pyramids that share  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(14)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(5)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent P(2)Se4 tetrahedra, corners with two equivalent Li(10)Se5 trigonal bipyramids,  an edgeedge with one Li(13)Se4 tetrahedra,  an edgeedge with one Li(17)Se4 tetrahedra,  an edgeedge with one Si(1)Se4 tetrahedra, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. In the second Li site, Li(2) is bonded in a 5-coordinate geometry to one Se(1), one Se(12), one Se(19), one Se(2), and one Se(20) atom. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one Se(13), one Se(14), one Se(21), one Se(22), one Se(7), and one Se(8) atom. In the fourth Li site, Li(4) is bonded to one Se(15), one Se(16), one Se(23), one Se(24), one Se(5), and one Se(6) atom to form distorted LiSe6 octahedra that share  a cornercorner with one Li(11)Se4 tetrahedra,  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Li(9)Se4 tetrahedra, corners with two equivalent P(2)Se4 tetrahedra,  an edgeedge with one Li(13)Se4 tetrahedra,  an edgeedge with one Li(14)Se4 tetrahedra,  an edgeedge with one Li(17)Se4 tetrahedra,  an edgeedge with one Li(5)Se4 tetrahedra,  an edgeedge with one Si(2)Se4 tetrahedra,  an edgeedge with one P(4)Se4 tetrahedra, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. In the fifth Li site, Li(5) is bonded to one Se(20), one Se(24), one Se(6), and one Se(9) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one P(2)Se4 tetrahedra,  a cornercorner with one P(4)Se4 tetrahedra, corners with two equivalent Li(14)Se4 tetrahedra,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(11)Se4 tetrahedra,  an edgeedge with one Si(1)Se4 tetrahedra, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. In the sixth Li site, Li(6) is bonded in a distorted see-saw-like geometry to one Se(13), one Se(19), one Se(2), and one Se(23) atom. In the seventh Li site, Li(7) is bonded to one Se(15), one Se(17), one Se(22), and one Se(7) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Li(15)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  a cornercorner with one Li(16)Se5 trigonal bipyramid, and  an edgeedge with one Si(2)Se4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. In the eighth Li site, Li(8) is bonded in a 5-coordinate geometry to one Se(10), one Se(13), one Se(2), one Se(20), and one Se(24) atom. In the ninth Li site, Li(9) is bonded to one Se(1), one Se(14), one Se(19), and one Se(23) atom to form LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(11)Se4 tetrahedra,  an edgeedge with one Li(14)Se4 tetrahedra, and  an edgeedge with one P(4)Se4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the tenth Li site, Li(10) is bonded to one Se(11), one Se(21), one Se(22), one Se(3), and one Se(4) atom to form LiSe5 trigonal bipyramids that share corners with two equivalent Li(1)Se5 square pyramids,  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(17)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Si(2)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Li(12)Se4 tetrahedra,  an edgeedge with one Li(20)Se4 tetrahedra, and  an edgeedge with one P(2)Se4 tetrahedra. In the eleventh Li site, Li(11) is bonded to one Se(1), one Se(14), one Se(20), and one Se(24) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(9)Se4 tetrahedra,  an edgeedge with one Li(5)Se4 tetrahedra, and  an edgeedge with one P(4)Se4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the twelfth Li site, Li(12) is bonded to one Se(16), one Se(18), one Se(21), and one Se(4) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one P(2)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Li(17)Se4 tetrahedra, corners with two equivalent Li(20)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Si(2)Se4 tetrahedra, and  an edgeedge with one Li(10)Se5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 73°. In the thirteenth Li site, Li(13) is bonded to one Se(10), one Se(15), one Se(3), and one Se(5) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra, corners with two equivalent Li(17)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid, corners with two equivalent Li(16)Se5 trigonal bipyramids,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(1)Se5 square pyramid, and  an edgeedge with one P(2)Se4 tetrahedra. In the fourteenth Li site, Li(14) is bonded to one Se(19), one Se(23), one Se(6), and one Se(9) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one P(2)Se4 tetrahedra,  a cornercorner with one P(4)Se4 tetrahedra, corners with two equivalent Li(5)Se4 tetrahedra, corners with two equivalent Li(16)Se5 trigonal bipyramids,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(9)Se4 tetrahedra, and  an edgeedge with one Si(1)Se4 tetrahedra. In the fifteenth Li site, Li(15) is bonded to one Se(12), one Se(17), one Se(22), and one Se(8) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one Si(2)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(7)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid, and  an edgeedge with one P(3)Se4 tetrahedra. In the sixteenth Li site, Li(16) is bonded to one Se(15), one Se(18), one Se(3), one Se(6), and one Se(9) atom to form distorted LiSe5 trigonal bipyramids that share  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Li(13)Se4 tetrahedra, corners with two equivalent Li(14)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(1)Se5 square pyramid,  an edgeedge with one Li(5)Se4 tetrahedra, and  an edgeedge with one P(2)Se4 tetrahedra. In the seventeenth Li site, Li(17) is bonded to one Se(10), one Se(16), one Se(4), and one Se(5) atom to form LiSe4 tetrahedra that share  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra, corners with two equivalent Li(12)Se4 tetrahedra, corners with two equivalent Li(13)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(1)Se5 square pyramid, and  an edgeedge with one P(2)Se4 tetrahedra. In the eighteenth Li site, Li(18) is bonded to one Se(11), one Se(13), one Se(2), and one Se(7) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra,  a cornercorner with one P(4)Se4 tetrahedra, corners with two equivalent Li(20)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid, and  an edgeedge with one P(1)Se4 tetrahedra. In the nineteenth Li site, Li(19) is bonded in a 5-coordinate geometry to one Se(1), one Se(12), one Se(18), one Se(21), and one Se(8) atom. In the twentieth Li site, Li(20) is bonded to one Se(11), one Se(18), one Se(21), and one Se(7) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(12)Se4 tetrahedra, corners with two equivalent Li(18)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one P(3)Se4 tetrahedra, and  an edgeedge with one Li(10)Se5 trigonal bipyramid. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one Se(10), one Se(19), one Se(20), and one Se(9) atom to form SiSe4 tetrahedra that share  a cornercorner with one Li(11)Se4 tetrahedra,  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(17)Se4 tetrahedra,  a cornercorner with one Li(9)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Li(1)Se5 square pyramid,  an edgeedge with one Li(14)Se4 tetrahedra, and  an edgeedge with one Li(5)Se4 tetrahedra. In the second Si site, Si(2) is bonded to one Se(15), one Se(16), one Se(21), and one Se(22) atom to form SiSe4 tetrahedra that share  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(17)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid, corners with two equivalent Li(10)Se5 trigonal bipyramids,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(12)Se4 tetrahedra, and  an edgeedge with one Li(7)Se4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one Se(1), one Se(2), one Se(7), and one Se(8) atom to form PSe4 tetrahedra that share  a cornercorner with one Li(11)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Li(9)Se4 tetrahedra, and  an edgeedge with one Li(18)Se4 tetrahedra. In the second P site, P(2) is bonded to one Se(3), one Se(4), one Se(5), and one Se(6) atom to form PSe4 tetrahedra that share corners with two equivalent Li(4)Se6 octahedra, corners with two equivalent Li(1)Se5 square pyramids,  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(14)Se4 tetrahedra,  a cornercorner with one Li(5)Se4 tetrahedra,  an edgeedge with one Li(13)Se4 tetrahedra,  an edgeedge with one Li(17)Se4 tetrahedra,  an edgeedge with one Li(10)Se5 trigonal bipyramid, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 29-56°. In the third P site, P(3) is bonded to one Se(11), one Se(12), one Se(17), and one Se(18) atom to form PSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Li(15)Se4 tetrahedra, and  an edgeedge with one Li(20)Se4 tetrahedra. In the fourth P site, P(4) is bonded to one Se(13), one Se(14), one Se(23), and one Se(24) atom to form PSe4 tetrahedra that share  a cornercorner with one Li(14)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(5)Se4 tetrahedra,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(11)Se4 tetrahedra, and  an edgeedge with one Li(9)Se4 tetrahedra. There are twenty-four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 5-coordinate geometry to one Li(11), one Li(19), one Li(2), one Li(9), and one P(1) atom. In the second Se site, Se(2) is bonded to one Li(18), one Li(2), one Li(6), one Li(8), and one P(1) atom to form distorted SeLi4P square pyramids that share  a cornercorner with one Se(24)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(23)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  an edgeedge with one Se(20)Li4Si square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid,  an edgeedge with one Se(7)Li4P trigonal bipyramid, and  an edgeedge with one Se(19)Li4Si trigonal bipyramid. In the third Se site, Se(3) is bonded to one Li(1), one Li(10), one Li(13), one Li(16), and one P(2) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid, and  an edgeedge with one Se(4)Li4P square pyramid. In the fourth Se site, Se(4) is bonded to one Li(1), one Li(10), one Li(12), one Li(17), and one P(2) atom to form distorted SeLi4P square pyramids that share  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid, and  an edgeedge with one Se(3)Li4P trigonal bipyramid. In the fifth Se site, Se(5) is bonded in a 4-coordinate geometry to one Li(13), one Li(17), one Li(4), and one P(2) atom. In the sixth Se site, Se(6) is bonded in a 5-coordinate geometry to one Li(14), one Li(16), one Li(4), one Li(5), and one P(2) atom. In the seventh Se site, Se(7) is bonded to one Li(18), one Li(20), one Li(3), one Li(7), and one P(1) atom to form distorted SeLi4P trigonal bipyramids that share corners with two equivalent Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid, and  an edgeedge with one Se(22)Li4Si trigonal bipyramid. In the eighth Se site, Se(8) is bonded in a distorted see-saw-like geometry to one Li(15), one Li(19), one Li(3), and one P(1) atom. In the ninth Se site, Se(9) is bonded in a 5-coordinate geometry to one Li(1), one Li(14), one Li(16), one Li(5), and one Si(1) atom. In the tenth Se site, Se(10) is bonded in a 5-coordinate geometry to one Li(1), one Li(13), one Li(17), one Li(8), and one Si(1) atom. In the eleventh Se site, Se(11) is bonded to one Li(10), one Li(18), one Li(20), and one P(3) atom to form distorted SeLi3P tetrahedra that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid, corners with two equivalent Se(7)Li4P trigonal bipyramids,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid, and  an edgeedge with one Se(18)Li4P trigonal bipyramid. In the twelfth Se site, Se(12) is bonded to one Li(15), one Li(19), one Li(2), and one P(3) atom to form SeLi3P trigonal pyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(20)Li4Si square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  an edgeedge with one Se(18)Li4P trigonal bipyramid, and  an edgeedge with one Se(17)Li3P trigonal pyramid. In the thirteenth Se site, Se(13) is bonded to one Li(18), one Li(3), one Li(6), one Li(8), and one P(4) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(20)Li4Si square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(24)Li4P square pyramid,  an edgeedge with one Se(23)Li4P trigonal bipyramid,  an edgeedge with one Se(7)Li4P trigonal bipyramid, and  an edgeedge with one Se(14)Li3P trigonal pyramid. In the fourteenth Se site, Se(14) is bonded to one Li(11), one Li(3), one Li(9), and one P(4) atom to form SeLi3P trigonal pyramids that share  a cornercorner with one Se(20)Li4Si square pyramid,  a cornercorner with one Se(7)Li4P trigonal bipyramid,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  an edgeedge with one Se(24)Li4P square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid, and  an edgeedge with one Se(23)Li4P trigonal bipyramid. In the fifteenth Se site, Se(15) is bonded in a 5-coordinate geometry to one Li(13), one Li(16), one Li(4), one Li(7), and one Si(2) atom. In the sixteenth Se site, Se(16) is bonded in a distorted see-saw-like geometry to one Li(12), one Li(17), one Li(4), and one Si(2) atom. In the seventeenth Se site, Se(17) is bonded to one Li(1), one Li(15), one Li(7), and one P(3) atom to form SeLi3P trigonal pyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(7)Li4P trigonal bipyramid, corners with two equivalent Se(22)Li4Si trigonal bipyramids, and  an edgeedge with one Se(12)Li3P trigonal pyramid. In the eighteenth Se site, Se(18) is bonded to one Li(12), one Li(16), one Li(19), one Li(20), and one P(3) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(7)Li4P trigonal bipyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid,  an edgeedge with one Se(11)Li3P tetrahedra, and  an edgeedge with one Se(12)Li3P trigonal pyramid. In the nineteenth Se site, Se(19) is bonded to one Li(14), one Li(2), one Li(6), one Li(9), and one Si(1) atom to form distorted SeLi4Si trigonal bipyramids that share  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(23)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(20)Li4Si square pyramid, and  an edgeedge with one Se(23)Li4P trigonal bipyramid. In the twentieth Se site, Se(20) is bonded to one Li(11), one Li(2), one Li(5), one Li(8), and one Si(1) atom to form distorted SeLi4Si square pyramids that share  a cornercorner with one Se(24)Li4P square pyramid,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(24)Li4P square pyramid, and  an edgeedge with one Se(19)Li4Si trigonal bipyramid. In the twenty-first Se site, Se(21) is bonded in a 6-coordinate geometry to one Li(10), one Li(12), one Li(19), one Li(20), one Li(3), and one Si(2) atom. In the twenty-second Se site, Se(22) is bonded to one Li(10), one Li(15), one Li(3), one Li(7), and one Si(2) atom to form distorted SeLi4Si trigonal bipyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid, corners with two equivalent Se(17)Li3P trigonal pyramids, and  an edgeedge with one Se(7)Li4P trigonal bipyramid. In the twenty-third Se site, Se(23) is bonded to one Li(14), one Li(4), one Li(6), one Li(9), and one P(4) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  an edgeedge with one Se(24)Li4P square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid,  an edgeedge with one Se(19)Li4Si trigonal bipyramid, and  an edgeedge with one Se(14)Li3P trigonal pyramid. In the twenty-fourth Se site, Se(24) is bonded to one Li(11), one Li(4), one Li(5), one Li(8), and one P(4) atom to form distorted SeLi4P square pyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(20)Li4Si square pyramid,  an edgeedge with one Se(20)Li4Si square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid,  an edgeedge with one Se(23)Li4P trigonal bipyramid, and  an edgeedge with one Se(14)Li3P trigonal pyramid. is represented by the CIF file [CIF]
data_Li10Si(PSe6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.030
_cell_length_b   9.370
_cell_length_c   13.638
_cell_angle_alpha   91.746
_cell_angle_beta   90.682
_cell_angle_gamma   90.354
_symmetry_Int_Tables_number   1
_cell_volume   1153.322
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Li  Li0  1  0.988  0.516  0.956  1.0
  Li  Li1  1  0.966  0.517  0.425  1.0
  Li  Li2  1  0.509  0.966  0.548  1.0
  Li  Li3  1  0.497  0.993  0.048  1.0
  Li  Li4  1  0.257  0.292  0.158  1.0
  Li  Li5  1  0.746  0.747  0.281  1.0
  Li  Li6  1  0.219  0.818  0.755  1.0
  Li  Li7  1  0.231  0.756  0.251  1.0
  Li  Li8  1  0.754  0.220  0.350  1.0
  Li  Li9  1  0.462  0.517  0.752  1.0
  Li  Li10  1  0.230  0.227  0.364  1.0
  Li  Li11  1  0.731  0.256  0.857  1.0
  Li  Li12  1  0.248  0.760  0.007  1.0
  Li  Li13  1  0.742  0.266  0.133  1.0
  Li  Li14  1  0.763  0.726  0.690  1.0
  Li  Li15  1  0.225  0.261  0.920  1.0
  Li  Li16  1  0.745  0.759  0.009  1.0
  Li  Li17  1  0.241  0.722  0.484  1.0
  Li  Li18  1  0.784  0.214  0.626  1.0
  Li  Li19  1  0.241  0.211  0.650  1.0
  Si  Si20  1  0.997  0.486  0.183  1.0
  Si  Si21  1  0.508  0.993  0.816  1.0
  P  P22  1  0.993  0.966  0.502  1.0
  P  P23  1  0.492  0.515  0.993  1.0
  P  P24  1  0.009  0.482  0.684  1.0
  P  P25  1  0.488  0.010  0.310  1.0
  Se  Se26  1  0.989  0.184  0.444  1.0
  Se  Se27  1  0.005  0.791  0.386  1.0
  Se  Se28  1  0.289  0.535  0.898  1.0
  Se  Se29  1  0.690  0.534  0.896  1.0
  Se  Se30  1  0.497  0.698  0.102  1.0
  Se  Se31  1  0.485  0.304  0.061  1.0
  Se  Se32  1  0.203  0.945  0.591  1.0
  Se  Se33  1  0.796  0.945  0.594  1.0
  Se  Se34  1  0.006  0.298  0.069  1.0
  Se  Se35  1  0.000  0.704  0.107  1.0
  Se  Se36  1  0.220  0.486  0.599  1.0
  Se  Se37  1  0.809  0.492  0.587  1.0
  Se  Se38  1  0.487  0.794  0.376  1.0
  Se  Se39  1  0.496  0.184  0.425  1.0
  Se  Se40  1  0.288  0.991  0.904  1.0
  Se  Se41  1  0.712  0.996  0.917  1.0
  Se  Se42  1  0.992  0.666  0.791  1.0
  Se  Se43  1  0.003  0.274  0.761  1.0
  Se  Se44  1  0.782  0.467  0.270  1.0
  Se  Se45  1  0.197  0.480  0.289  1.0
  Se  Se46  1  0.516  0.197  0.725  1.0
  Se  Se47  1  0.493  0.800  0.706  1.0
  Se  Se48  1  0.692  0.015  0.219  1.0
  Se  Se49  1  0.286  0.031  0.216  1.0
[/CIF]
.
The material described by Li10Si(PSe6)2 crystallizes in the triclinic P1 space group. There are twenty inequivalent Li sites. In the first Li site, Li(1) is bonded to one Se(10), one Se(17), one Se(3), one Se(4), and one Se(9) atom to form distorted LiSe5 square pyramids that share  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(14)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(5)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent P(2)Se4 tetrahedra, corners with two equivalent Li(10)Se5 trigonal bipyramids,  an edgeedge with one Li(13)Se4 tetrahedra,  an edgeedge with one Li(17)Se4 tetrahedra,  an edgeedge with one Si(1)Se4 tetrahedra, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. In the second Li site, Li(2) is bonded in a 5-coordinate geometry to one Se(1), one Se(12), one Se(19), one Se(2), and one Se(20) atom. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one Se(13), one Se(14), one Se(21), one Se(22), one Se(7), and one Se(8) atom. In the fourth Li site, Li(4) is bonded to one Se(15), one Se(16), one Se(23), one Se(24), one Se(5), and one Se(6) atom to form distorted LiSe6 octahedra that share  a cornercorner with one Li(11)Se4 tetrahedra,  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Li(9)Se4 tetrahedra, corners with two equivalent P(2)Se4 tetrahedra,  an edgeedge with one Li(13)Se4 tetrahedra,  an edgeedge with one Li(14)Se4 tetrahedra,  an edgeedge with one Li(17)Se4 tetrahedra,  an edgeedge with one Li(5)Se4 tetrahedra,  an edgeedge with one Si(2)Se4 tetrahedra,  an edgeedge with one P(4)Se4 tetrahedra, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. In the fifth Li site, Li(5) is bonded to one Se(20), one Se(24), one Se(6), and one Se(9) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one P(2)Se4 tetrahedra,  a cornercorner with one P(4)Se4 tetrahedra, corners with two equivalent Li(14)Se4 tetrahedra,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(11)Se4 tetrahedra,  an edgeedge with one Si(1)Se4 tetrahedra, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. In the sixth Li site, Li(6) is bonded in a distorted see-saw-like geometry to one Se(13), one Se(19), one Se(2), and one Se(23) atom. In the seventh Li site, Li(7) is bonded to one Se(15), one Se(17), one Se(22), and one Se(7) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Li(15)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  a cornercorner with one Li(16)Se5 trigonal bipyramid, and  an edgeedge with one Si(2)Se4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. In the eighth Li site, Li(8) is bonded in a 5-coordinate geometry to one Se(10), one Se(13), one Se(2), one Se(20), and one Se(24) atom. In the ninth Li site, Li(9) is bonded to one Se(1), one Se(14), one Se(19), and one Se(23) atom to form LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(11)Se4 tetrahedra,  an edgeedge with one Li(14)Se4 tetrahedra, and  an edgeedge with one P(4)Se4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the tenth Li site, Li(10) is bonded to one Se(11), one Se(21), one Se(22), one Se(3), and one Se(4) atom to form LiSe5 trigonal bipyramids that share corners with two equivalent Li(1)Se5 square pyramids,  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(17)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Si(2)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Li(12)Se4 tetrahedra,  an edgeedge with one Li(20)Se4 tetrahedra, and  an edgeedge with one P(2)Se4 tetrahedra. In the eleventh Li site, Li(11) is bonded to one Se(1), one Se(14), one Se(20), and one Se(24) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(9)Se4 tetrahedra,  an edgeedge with one Li(5)Se4 tetrahedra, and  an edgeedge with one P(4)Se4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the twelfth Li site, Li(12) is bonded to one Se(16), one Se(18), one Se(21), and one Se(4) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(4)Se6 octahedra,  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one P(2)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Li(17)Se4 tetrahedra, corners with two equivalent Li(20)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Si(2)Se4 tetrahedra, and  an edgeedge with one Li(10)Se5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 73°. In the thirteenth Li site, Li(13) is bonded to one Se(10), one Se(15), one Se(3), and one Se(5) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra, corners with two equivalent Li(17)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid, corners with two equivalent Li(16)Se5 trigonal bipyramids,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(1)Se5 square pyramid, and  an edgeedge with one P(2)Se4 tetrahedra. In the fourteenth Li site, Li(14) is bonded to one Se(19), one Se(23), one Se(6), and one Se(9) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one P(2)Se4 tetrahedra,  a cornercorner with one P(4)Se4 tetrahedra, corners with two equivalent Li(5)Se4 tetrahedra, corners with two equivalent Li(16)Se5 trigonal bipyramids,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(9)Se4 tetrahedra, and  an edgeedge with one Si(1)Se4 tetrahedra. In the fifteenth Li site, Li(15) is bonded to one Se(12), one Se(17), one Se(22), and one Se(8) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one Si(2)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(7)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid, and  an edgeedge with one P(3)Se4 tetrahedra. In the sixteenth Li site, Li(16) is bonded to one Se(15), one Se(18), one Se(3), one Se(6), and one Se(9) atom to form distorted LiSe5 trigonal bipyramids that share  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra, corners with two equivalent Li(13)Se4 tetrahedra, corners with two equivalent Li(14)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(1)Se5 square pyramid,  an edgeedge with one Li(5)Se4 tetrahedra, and  an edgeedge with one P(2)Se4 tetrahedra. In the seventeenth Li site, Li(17) is bonded to one Se(10), one Se(16), one Se(4), and one Se(5) atom to form LiSe4 tetrahedra that share  a cornercorner with one Si(1)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra, corners with two equivalent Li(12)Se4 tetrahedra, corners with two equivalent Li(13)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(1)Se5 square pyramid, and  an edgeedge with one P(2)Se4 tetrahedra. In the eighteenth Li site, Li(18) is bonded to one Se(11), one Se(13), one Se(2), and one Se(7) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one P(3)Se4 tetrahedra,  a cornercorner with one P(4)Se4 tetrahedra, corners with two equivalent Li(20)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid, and  an edgeedge with one P(1)Se4 tetrahedra. In the nineteenth Li site, Li(19) is bonded in a 5-coordinate geometry to one Se(1), one Se(12), one Se(18), one Se(21), and one Se(8) atom. In the twentieth Li site, Li(20) is bonded to one Se(11), one Se(18), one Se(21), and one Se(7) atom to form distorted LiSe4 tetrahedra that share  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Si(2)Se4 tetrahedra,  a cornercorner with one P(1)Se4 tetrahedra, corners with two equivalent Li(12)Se4 tetrahedra, corners with two equivalent Li(18)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one P(3)Se4 tetrahedra, and  an edgeedge with one Li(10)Se5 trigonal bipyramid. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one Se(10), one Se(19), one Se(20), and one Se(9) atom to form SiSe4 tetrahedra that share  a cornercorner with one Li(11)Se4 tetrahedra,  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(17)Se4 tetrahedra,  a cornercorner with one Li(9)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Li(1)Se5 square pyramid,  an edgeedge with one Li(14)Se4 tetrahedra, and  an edgeedge with one Li(5)Se4 tetrahedra. In the second Si site, Si(2) is bonded to one Se(15), one Se(16), one Se(21), and one Se(22) atom to form SiSe4 tetrahedra that share  a cornercorner with one Li(13)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(17)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one Li(16)Se5 trigonal bipyramid, corners with two equivalent Li(10)Se5 trigonal bipyramids,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(12)Se4 tetrahedra, and  an edgeedge with one Li(7)Se4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one Se(1), one Se(2), one Se(7), and one Se(8) atom to form PSe4 tetrahedra that share  a cornercorner with one Li(11)Se4 tetrahedra,  a cornercorner with one Li(15)Se4 tetrahedra,  a cornercorner with one Li(20)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Li(9)Se4 tetrahedra, and  an edgeedge with one Li(18)Se4 tetrahedra. In the second P site, P(2) is bonded to one Se(3), one Se(4), one Se(5), and one Se(6) atom to form PSe4 tetrahedra that share corners with two equivalent Li(4)Se6 octahedra, corners with two equivalent Li(1)Se5 square pyramids,  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(14)Se4 tetrahedra,  a cornercorner with one Li(5)Se4 tetrahedra,  an edgeedge with one Li(13)Se4 tetrahedra,  an edgeedge with one Li(17)Se4 tetrahedra,  an edgeedge with one Li(10)Se5 trigonal bipyramid, and  an edgeedge with one Li(16)Se5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 29-56°. In the third P site, P(3) is bonded to one Se(11), one Se(12), one Se(17), and one Se(18) atom to form PSe4 tetrahedra that share  a cornercorner with one Li(1)Se5 square pyramid,  a cornercorner with one Li(12)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(7)Se4 tetrahedra,  a cornercorner with one Li(10)Se5 trigonal bipyramid,  a cornercorner with one Li(16)Se5 trigonal bipyramid,  an edgeedge with one Li(15)Se4 tetrahedra, and  an edgeedge with one Li(20)Se4 tetrahedra. In the fourth P site, P(4) is bonded to one Se(13), one Se(14), one Se(23), and one Se(24) atom to form PSe4 tetrahedra that share  a cornercorner with one Li(14)Se4 tetrahedra,  a cornercorner with one Li(18)Se4 tetrahedra,  a cornercorner with one Li(5)Se4 tetrahedra,  an edgeedge with one Li(4)Se6 octahedra,  an edgeedge with one Li(11)Se4 tetrahedra, and  an edgeedge with one Li(9)Se4 tetrahedra. There are twenty-four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 5-coordinate geometry to one Li(11), one Li(19), one Li(2), one Li(9), and one P(1) atom. In the second Se site, Se(2) is bonded to one Li(18), one Li(2), one Li(6), one Li(8), and one P(1) atom to form distorted SeLi4P square pyramids that share  a cornercorner with one Se(24)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(23)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  an edgeedge with one Se(20)Li4Si square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid,  an edgeedge with one Se(7)Li4P trigonal bipyramid, and  an edgeedge with one Se(19)Li4Si trigonal bipyramid. In the third Se site, Se(3) is bonded to one Li(1), one Li(10), one Li(13), one Li(16), and one P(2) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid, and  an edgeedge with one Se(4)Li4P square pyramid. In the fourth Se site, Se(4) is bonded to one Li(1), one Li(10), one Li(12), one Li(17), and one P(2) atom to form distorted SeLi4P square pyramids that share  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid, and  an edgeedge with one Se(3)Li4P trigonal bipyramid. In the fifth Se site, Se(5) is bonded in a 4-coordinate geometry to one Li(13), one Li(17), one Li(4), and one P(2) atom. In the sixth Se site, Se(6) is bonded in a 5-coordinate geometry to one Li(14), one Li(16), one Li(4), one Li(5), and one P(2) atom. In the seventh Se site, Se(7) is bonded to one Li(18), one Li(20), one Li(3), one Li(7), and one P(1) atom to form distorted SeLi4P trigonal bipyramids that share corners with two equivalent Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid, and  an edgeedge with one Se(22)Li4Si trigonal bipyramid. In the eighth Se site, Se(8) is bonded in a distorted see-saw-like geometry to one Li(15), one Li(19), one Li(3), and one P(1) atom. In the ninth Se site, Se(9) is bonded in a 5-coordinate geometry to one Li(1), one Li(14), one Li(16), one Li(5), and one Si(1) atom. In the tenth Se site, Se(10) is bonded in a 5-coordinate geometry to one Li(1), one Li(13), one Li(17), one Li(8), and one Si(1) atom. In the eleventh Se site, Se(11) is bonded to one Li(10), one Li(18), one Li(20), and one P(3) atom to form distorted SeLi3P tetrahedra that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid, corners with two equivalent Se(7)Li4P trigonal bipyramids,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid, and  an edgeedge with one Se(18)Li4P trigonal bipyramid. In the twelfth Se site, Se(12) is bonded to one Li(15), one Li(19), one Li(2), and one P(3) atom to form SeLi3P trigonal pyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(20)Li4Si square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  an edgeedge with one Se(18)Li4P trigonal bipyramid, and  an edgeedge with one Se(17)Li3P trigonal pyramid. In the thirteenth Se site, Se(13) is bonded to one Li(18), one Li(3), one Li(6), one Li(8), and one P(4) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(20)Li4Si square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(24)Li4P square pyramid,  an edgeedge with one Se(23)Li4P trigonal bipyramid,  an edgeedge with one Se(7)Li4P trigonal bipyramid, and  an edgeedge with one Se(14)Li3P trigonal pyramid. In the fourteenth Se site, Se(14) is bonded to one Li(11), one Li(3), one Li(9), and one P(4) atom to form SeLi3P trigonal pyramids that share  a cornercorner with one Se(20)Li4Si square pyramid,  a cornercorner with one Se(7)Li4P trigonal bipyramid,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  a cornercorner with one Se(22)Li4Si trigonal bipyramid,  an edgeedge with one Se(24)Li4P square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid, and  an edgeedge with one Se(23)Li4P trigonal bipyramid. In the fifteenth Se site, Se(15) is bonded in a 5-coordinate geometry to one Li(13), one Li(16), one Li(4), one Li(7), and one Si(2) atom. In the sixteenth Se site, Se(16) is bonded in a distorted see-saw-like geometry to one Li(12), one Li(17), one Li(4), and one Si(2) atom. In the seventeenth Se site, Se(17) is bonded to one Li(1), one Li(15), one Li(7), and one P(3) atom to form SeLi3P trigonal pyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(18)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(7)Li4P trigonal bipyramid, corners with two equivalent Se(22)Li4Si trigonal bipyramids, and  an edgeedge with one Se(12)Li3P trigonal pyramid. In the eighteenth Se site, Se(18) is bonded to one Li(12), one Li(16), one Li(19), one Li(20), and one P(3) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(7)Li4P trigonal bipyramid,  a cornercorner with one Se(17)Li3P trigonal pyramid,  an edgeedge with one Se(11)Li3P tetrahedra, and  an edgeedge with one Se(12)Li3P trigonal pyramid. In the nineteenth Se site, Se(19) is bonded to one Li(14), one Li(2), one Li(6), one Li(9), and one Si(1) atom to form distorted SeLi4Si trigonal bipyramids that share  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(23)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(20)Li4Si square pyramid, and  an edgeedge with one Se(23)Li4P trigonal bipyramid. In the twentieth Se site, Se(20) is bonded to one Li(11), one Li(2), one Li(5), one Li(8), and one Si(1) atom to form distorted SeLi4Si square pyramids that share  a cornercorner with one Se(24)Li4P square pyramid,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid,  an edgeedge with one Se(2)Li4P square pyramid,  an edgeedge with one Se(24)Li4P square pyramid, and  an edgeedge with one Se(19)Li4Si trigonal bipyramid. In the twenty-first Se site, Se(21) is bonded in a 6-coordinate geometry to one Li(10), one Li(12), one Li(19), one Li(20), one Li(3), and one Si(2) atom. In the twenty-second Se site, Se(22) is bonded to one Li(10), one Li(15), one Li(3), one Li(7), and one Si(2) atom to form distorted SeLi4Si trigonal bipyramids that share  a cornercorner with one Se(4)Li4P square pyramid,  a cornercorner with one Se(11)Li3P tetrahedra,  a cornercorner with one Se(13)Li4P trigonal bipyramid,  a cornercorner with one Se(3)Li4P trigonal bipyramid,  a cornercorner with one Se(12)Li3P trigonal pyramid,  a cornercorner with one Se(14)Li3P trigonal pyramid, corners with two equivalent Se(17)Li3P trigonal pyramids, and  an edgeedge with one Se(7)Li4P trigonal bipyramid. In the twenty-third Se site, Se(23) is bonded to one Li(14), one Li(4), one Li(6), one Li(9), and one P(4) atom to form distorted SeLi4P trigonal bipyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(19)Li4Si trigonal bipyramid,  an edgeedge with one Se(24)Li4P square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid,  an edgeedge with one Se(19)Li4Si trigonal bipyramid, and  an edgeedge with one Se(14)Li3P trigonal pyramid. In the twenty-fourth Se site, Se(24) is bonded to one Li(11), one Li(4), one Li(5), one Li(8), and one P(4) atom to form distorted SeLi4P square pyramids that share  a cornercorner with one Se(2)Li4P square pyramid,  a cornercorner with one Se(20)Li4Si square pyramid,  an edgeedge with one Se(20)Li4Si square pyramid,  an edgeedge with one Se(13)Li4P trigonal bipyramid,  an edgeedge with one Se(23)Li4P trigonal bipyramid, and  an edgeedge with one Se(14)Li3P trigonal pyramid. is represented by the CIF file [CIF]
data_Li10Si(PSe6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.030
_cell_length_b   9.370
_cell_length_c   13.638
_cell_angle_alpha   91.746
_cell_angle_beta   90.682
_cell_angle_gamma   90.354
_symmetry_Int_Tables_number   1
_cell_volume   1153.322
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Li  Li0  1  0.988  0.516  0.956  1.0
  Li  Li1  1  0.966  0.517  0.425  1.0
  Li  Li2  1  0.509  0.966  0.548  1.0
  Li  Li3  1  0.497  0.993  0.048  1.0
  Li  Li4  1  0.257  0.292  0.158  1.0
  Li  Li5  1  0.746  0.747  0.281  1.0
  Li  Li6  1  0.219  0.818  0.755  1.0
  Li  Li7  1  0.231  0.756  0.251  1.0
  Li  Li8  1  0.754  0.220  0.350  1.0
  Li  Li9  1  0.462  0.517  0.752  1.0
  Li  Li10  1  0.230  0.227  0.364  1.0
  Li  Li11  1  0.731  0.256  0.857  1.0
  Li  Li12  1  0.248  0.760  0.007  1.0
  Li  Li13  1  0.742  0.266  0.133  1.0
  Li  Li14  1  0.763  0.726  0.690  1.0
  Li  Li15  1  0.225  0.261  0.920  1.0
  Li  Li16  1  0.745  0.759  0.009  1.0
  Li  Li17  1  0.241  0.722  0.484  1.0
  Li  Li18  1  0.784  0.214  0.626  1.0
  Li  Li19  1  0.241  0.211  0.650  1.0
  Si  Si20  1  0.997  0.486  0.183  1.0
  Si  Si21  1  0.508  0.993  0.816  1.0
  P  P22  1  0.993  0.966  0.502  1.0
  P  P23  1  0.492  0.515  0.993  1.0
  P  P24  1  0.009  0.482  0.684  1.0
  P  P25  1  0.488  0.010  0.310  1.0
  Se  Se26  1  0.989  0.184  0.444  1.0
  Se  Se27  1  0.005  0.791  0.386  1.0
  Se  Se28  1  0.289  0.535  0.898  1.0
  Se  Se29  1  0.690  0.534  0.896  1.0
  Se  Se30  1  0.497  0.698  0.102  1.0
  Se  Se31  1  0.485  0.304  0.061  1.0
  Se  Se32  1  0.203  0.945  0.591  1.0
  Se  Se33  1  0.796  0.945  0.594  1.0
  Se  Se34  1  0.006  0.298  0.069  1.0
  Se  Se35  1  0.000  0.704  0.107  1.0
  Se  Se36  1  0.220  0.486  0.599  1.0
  Se  Se37  1  0.809  0.492  0.587  1.0
  Se  Se38  1  0.487  0.794  0.376  1.0
  Se  Se39  1  0.496  0.184  0.425  1.0
  Se  Se40  1  0.288  0.991  0.904  1.0
  Se  Se41  1  0.712  0.996  0.917  1.0
  Se  Se42  1  0.992  0.666  0.791  1.0
  Se  Se43  1  0.003  0.274  0.761  1.0
  Se  Se44  1  0.782  0.467  0.270  1.0
  Se  Se45  1  0.197  0.480  0.289  1.0
  Se  Se46  1  0.516  0.197  0.725  1.0
  Se  Se47  1  0.493  0.800  0.706  1.0
  Se  Se48  1  0.692  0.015  0.219  1.0
  Se  Se49  1  0.286  0.031  0.216  1.0
[/CIF]
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