The compound described by Li2CoSn(PO4)2 crystallizes in the triclinic P1 space group. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(7) atom. In the second Li site, Li(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(4), one O(5), and one O(8) atom. In the third Li site, Li(3) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(7) atom. In the fourth Li site, Li(4) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(4), one O(5), and one O(8) atom. In the fifth Li site, Li(5) is bonded to one O(11), one O(13), one O(15), one O(27), one O(29), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(7)O6 octahedra,  an edgeedge with one P(5)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. In the sixth Li site, Li(6) is bonded to one O(10), one O(12), one O(14), one O(16), one O(28), and one O(30) atom to form LiO6 octahedra that share  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(8)O6 octahedra,  an edgeedge with one P(6)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. In the seventh Li site, Li(7) is bonded to one O(11), one O(13), one O(15), one O(25), one O(31), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(5)O6 octahedra,  an edgeedge with one P(5)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(10), one O(12), one O(14), one O(16), one O(26), and one O(32) atom to form LiO6 octahedra that share  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(6)O6 octahedra,  an edgeedge with one P(6)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(13), one O(17), one O(19), one O(26), and one O(28) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. In the second Co site, Co(2) is bonded to one O(15), one O(21), one O(23), one O(30), and one O(32) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(8)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-64°. In the third Co site, Co(3) is bonded to one O(14), one O(18), one O(20), one O(25), and one O(27) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-65°. In the fourth Co site, Co(4) is bonded to one O(16), one O(22), one O(24), one O(29), and one O(31) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(7)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to one O(1), one O(17), one O(19), one O(25), one O(27), and one O(9) atom. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to one O(10), one O(18), one O(2), one O(20), one O(26), and one O(28) atom. In the third Sn site, Sn(3) is bonded in a 6-coordinate geometry to one O(11), one O(21), one O(23), one O(29), one O(3), and one O(31) atom. In the fourth Sn site, Sn(4) is bonded in a 6-coordinate geometry to one O(12), one O(22), one O(24), one O(30), one O(32), and one O(4) atom. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(17), one O(19), one O(3), and one O(5) atom to form PO4 tetrahedra that share  an edgeedge with one Co(1)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(18), one O(20), one O(4), and one O(6) atom to form PO4 tetrahedra that share  an edgeedge with one Co(3)O5 trigonal bipyramid. In the third P site, P(3) is bonded to one O(1), one O(21), one O(23), and one O(7) atom to form PO4 tetrahedra that share  an edgeedge with one Co(2)O5 trigonal bipyramid. In the fourth P site, P(4) is bonded to one O(2), one O(22), one O(24), and one O(8) atom to form PO4 tetrahedra that share  an edgeedge with one Co(4)O5 trigonal bipyramid. In the fifth P site, P(5) is bonded to one O(10), one O(15), one O(25), and one O(27) atom to form PO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one Co(2)O5 trigonal bipyramid, corners with two equivalent Co(3)O5 trigonal bipyramids,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Li(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. In the sixth P site, P(6) is bonded to one O(16), one O(26), one O(28), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Co(4)O5 trigonal bipyramid, corners with two equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Li(6)O6 octahedra, and  an edgeedge with one Li(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the seventh P site, P(7) is bonded to one O(12), one O(13), one O(29), and one O(31) atom to form PO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid, corners with two equivalent Co(4)O5 trigonal bipyramids,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Li(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the eighth P site, P(8) is bonded to one O(11), one O(14), one O(30), and one O(32) atom to form PO4 tetrahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Co(3)O5 trigonal bipyramid, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Li(6)O6 octahedra, and  an edgeedge with one Li(8)O6 octahedra. The corner-sharing octahedral tilt angles are 56°. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Li(2), one Li(4), one Sn(1), and one P(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), one Li(3), one Sn(2), and one P(4) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Li(3), one Sn(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(2), one Li(4), one Sn(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(2), one Li(4), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Li(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Li(1), one Li(3), and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Li(2), one Li(4), and one P(4) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Li(5), one Li(7), one Sn(1), and one P(6) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Li(6), one Li(8), one Sn(2), and one P(5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Li(5), one Li(7), one Sn(3), and one P(8) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Li(6), one Li(8), one Sn(4), and one P(7) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Li(5), one Li(7), one Co(1), and one P(7) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(6), one Li(8), one Co(3), and one P(8) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Li(5), one Li(7), one Co(2), and one P(5) atom. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(6), one Li(8), one Co(4), and one P(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Co(1), one Sn(1), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Co(3), one Sn(2), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Co(1), one Sn(1), and one P(1) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Co(3), one Sn(2), and one P(2) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Co(2), one Sn(3), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Co(4), one Sn(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Co(2), one Sn(3), and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Co(4), one Sn(4), and one P(4) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Li(7), one Co(3), one Sn(1), and one P(5) atom. In the twenty-sixth O site, O(26) is bonded in a 3-coordinate geometry to one Li(8), one Co(1), one Sn(2), and one P(6) atom. In the twenty-seventh O site, O(27) is bonded in a 3-coordinate geometry to one Li(5), one Co(3), one Sn(1), and one P(5) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Li(6), one Co(1), one Sn(2), and one P(6) atom. In the twenty-ninth O site, O(29) is bonded in a 3-coordinate geometry to one Li(5), one Co(4), one Sn(3), and one P(7) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Li(6), one Co(2), one Sn(4), and one P(8) atom. In the thirty-first O site, O(31) is bonded in a 3-coordinate geometry to one Li(7), one Co(4), one Sn(3), and one P(7) atom. In the thirty-second O site, O(32) is bonded in a 3-coordinate geometry to one Li(8), one Co(2), one Sn(4), and one P(8) atom. is represented by the CIF file [CIF]
data_Li2CoSn(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.938
_cell_length_b   5.926
_cell_length_c   12.032
_cell_angle_alpha   89.761
_cell_angle_beta   99.624
_cell_angle_gamma   89.911
_symmetry_Int_Tables_number   1
_cell_volume   347.173
_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
  Co  Co0  1  0.967  0.253  0.315  1.0
  Co  Co1  1  0.036  0.750  0.686  1.0
  Li  Li2  1  1.000  0.000  0.002  1.0
  Li  Li3  1  0.996  0.501  0.001  1.0
  Li  Li4  1  0.502  0.000  0.499  1.0
  Li  Li5  1  0.498  0.500  0.501  1.0
  O  O6  1  0.274  0.750  0.005  1.0
  O  O7  1  0.722  0.248  0.995  1.0
  O  O8  1  0.292  0.250  0.090  1.0
  O  O9  1  0.707  0.748  0.912  1.0
  O  O10  1  0.754  0.752  0.406  1.0
  O  O11  1  0.247  0.251  0.593  1.0
  O  O12  1  0.774  0.250  0.455  1.0
  O  O13  1  0.225  0.753  0.544  1.0
  O  O14  1  0.736  0.040  0.181  1.0
  O  O15  1  0.742  0.451  0.181  1.0
  O  O16  1  0.260  0.545  0.819  1.0
  O  O17  1  0.263  0.956  0.818  1.0
  O  O18  1  0.183  0.537  0.366  1.0
  O  O19  1  0.183  0.966  0.364  1.0
  O  O20  1  0.819  0.036  0.635  1.0
  O  O21  1  0.819  0.465  0.634  1.0
  P  P22  1  0.605  0.247  0.106  1.0
  P  P23  1  0.394  0.750  0.894  1.0
  P  P24  1  0.071  0.752  0.420  1.0
  P  P25  1  0.930  0.250  0.580  1.0
  Sn  Sn26  1  0.464  0.748  0.220  1.0
  Sn  Sn27  1  0.537  0.250  0.780  1.0
[/CIF]
.
The compound described by Li2CoSn(PO4)2 crystallizes in the triclinic P1 space group. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(7) atom. In the second Li site, Li(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(4), one O(5), and one O(8) atom. In the third Li site, Li(3) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(7) atom. In the fourth Li site, Li(4) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(4), one O(5), and one O(8) atom. In the fifth Li site, Li(5) is bonded to one O(11), one O(13), one O(15), one O(27), one O(29), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(7)O6 octahedra,  an edgeedge with one P(5)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. In the sixth Li site, Li(6) is bonded to one O(10), one O(12), one O(14), one O(16), one O(28), and one O(30) atom to form LiO6 octahedra that share  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(8)O6 octahedra,  an edgeedge with one P(6)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. In the seventh Li site, Li(7) is bonded to one O(11), one O(13), one O(15), one O(25), one O(31), and one O(9) atom to form LiO6 octahedra that share  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(5)O6 octahedra,  an edgeedge with one P(5)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(10), one O(12), one O(14), one O(16), one O(26), and one O(32) atom to form LiO6 octahedra that share  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid,  a cornercorner with one Co(2)O5 trigonal bipyramid,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, edges with two equivalent Li(6)O6 octahedra,  an edgeedge with one P(6)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(13), one O(17), one O(19), one O(26), and one O(28) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. In the second Co site, Co(2) is bonded to one O(15), one O(21), one O(23), one O(30), and one O(32) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(8)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-64°. In the third Co site, Co(3) is bonded to one O(14), one O(18), one O(20), one O(25), and one O(27) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-65°. In the fourth Co site, Co(4) is bonded to one O(16), one O(22), one O(24), one O(29), and one O(31) atom to form distorted CoO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(7)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to one O(1), one O(17), one O(19), one O(25), one O(27), and one O(9) atom. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to one O(10), one O(18), one O(2), one O(20), one O(26), and one O(28) atom. In the third Sn site, Sn(3) is bonded in a 6-coordinate geometry to one O(11), one O(21), one O(23), one O(29), one O(3), and one O(31) atom. In the fourth Sn site, Sn(4) is bonded in a 6-coordinate geometry to one O(12), one O(22), one O(24), one O(30), one O(32), and one O(4) atom. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(17), one O(19), one O(3), and one O(5) atom to form PO4 tetrahedra that share  an edgeedge with one Co(1)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(18), one O(20), one O(4), and one O(6) atom to form PO4 tetrahedra that share  an edgeedge with one Co(3)O5 trigonal bipyramid. In the third P site, P(3) is bonded to one O(1), one O(21), one O(23), and one O(7) atom to form PO4 tetrahedra that share  an edgeedge with one Co(2)O5 trigonal bipyramid. In the fourth P site, P(4) is bonded to one O(2), one O(22), one O(24), and one O(8) atom to form PO4 tetrahedra that share  an edgeedge with one Co(4)O5 trigonal bipyramid. In the fifth P site, P(5) is bonded to one O(10), one O(15), one O(25), and one O(27) atom to form PO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one Co(2)O5 trigonal bipyramid, corners with two equivalent Co(3)O5 trigonal bipyramids,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Li(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-57°. In the sixth P site, P(6) is bonded to one O(16), one O(26), one O(28), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Co(4)O5 trigonal bipyramid, corners with two equivalent Co(1)O5 trigonal bipyramids,  an edgeedge with one Li(6)O6 octahedra, and  an edgeedge with one Li(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the seventh P site, P(7) is bonded to one O(12), one O(13), one O(29), and one O(31) atom to form PO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(8)O6 octahedra,  a cornercorner with one Co(1)O5 trigonal bipyramid, corners with two equivalent Co(4)O5 trigonal bipyramids,  an edgeedge with one Li(5)O6 octahedra, and  an edgeedge with one Li(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the eighth P site, P(8) is bonded to one O(11), one O(14), one O(30), and one O(32) atom to form PO4 tetrahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Li(7)O6 octahedra,  a cornercorner with one Co(3)O5 trigonal bipyramid, corners with two equivalent Co(2)O5 trigonal bipyramids,  an edgeedge with one Li(6)O6 octahedra, and  an edgeedge with one Li(8)O6 octahedra. The corner-sharing octahedral tilt angles are 56°. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Li(2), one Li(4), one Sn(1), and one P(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), one Li(3), one Sn(2), and one P(4) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Li(3), one Sn(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(2), one Li(4), one Sn(4), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(2), one Li(4), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Li(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Li(1), one Li(3), and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Li(2), one Li(4), and one P(4) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Li(5), one Li(7), one Sn(1), and one P(6) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Li(6), one Li(8), one Sn(2), and one P(5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Li(5), one Li(7), one Sn(3), and one P(8) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Li(6), one Li(8), one Sn(4), and one P(7) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Li(5), one Li(7), one Co(1), and one P(7) atom. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Li(6), one Li(8), one Co(3), and one P(8) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Li(5), one Li(7), one Co(2), and one P(5) atom. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Li(6), one Li(8), one Co(4), and one P(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Co(1), one Sn(1), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Co(3), one Sn(2), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Co(1), one Sn(1), and one P(1) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Co(3), one Sn(2), and one P(2) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Co(2), one Sn(3), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Co(4), one Sn(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Co(2), one Sn(3), and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Co(4), one Sn(4), and one P(4) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Li(7), one Co(3), one Sn(1), and one P(5) atom. In the twenty-sixth O site, O(26) is bonded in a 3-coordinate geometry to one Li(8), one Co(1), one Sn(2), and one P(6) atom. In the twenty-seventh O site, O(27) is bonded in a 3-coordinate geometry to one Li(5), one Co(3), one Sn(1), and one P(5) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Li(6), one Co(1), one Sn(2), and one P(6) atom. In the twenty-ninth O site, O(29) is bonded in a 3-coordinate geometry to one Li(5), one Co(4), one Sn(3), and one P(7) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Li(6), one Co(2), one Sn(4), and one P(8) atom. In the thirty-first O site, O(31) is bonded in a 3-coordinate geometry to one Li(7), one Co(4), one Sn(3), and one P(7) atom. In the thirty-second O site, O(32) is bonded in a 3-coordinate geometry to one Li(8), one Co(2), one Sn(4), and one P(8) atom. is represented by the CIF file [CIF]
data_Li2CoSn(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.938
_cell_length_b   5.926
_cell_length_c   12.032
_cell_angle_alpha   89.761
_cell_angle_beta   99.624
_cell_angle_gamma   89.911
_symmetry_Int_Tables_number   1
_cell_volume   347.173
_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
  Co  Co0  1  0.967  0.253  0.315  1.0
  Co  Co1  1  0.036  0.750  0.686  1.0
  Li  Li2  1  1.000  0.000  0.002  1.0
  Li  Li3  1  0.996  0.501  0.001  1.0
  Li  Li4  1  0.502  0.000  0.499  1.0
  Li  Li5  1  0.498  0.500  0.501  1.0
  O  O6  1  0.274  0.750  0.005  1.0
  O  O7  1  0.722  0.248  0.995  1.0
  O  O8  1  0.292  0.250  0.090  1.0
  O  O9  1  0.707  0.748  0.912  1.0
  O  O10  1  0.754  0.752  0.406  1.0
  O  O11  1  0.247  0.251  0.593  1.0
  O  O12  1  0.774  0.250  0.455  1.0
  O  O13  1  0.225  0.753  0.544  1.0
  O  O14  1  0.736  0.040  0.181  1.0
  O  O15  1  0.742  0.451  0.181  1.0
  O  O16  1  0.260  0.545  0.819  1.0
  O  O17  1  0.263  0.956  0.818  1.0
  O  O18  1  0.183  0.537  0.366  1.0
  O  O19  1  0.183  0.966  0.364  1.0
  O  O20  1  0.819  0.036  0.635  1.0
  O  O21  1  0.819  0.465  0.634  1.0
  P  P22  1  0.605  0.247  0.106  1.0
  P  P23  1  0.394  0.750  0.894  1.0
  P  P24  1  0.071  0.752  0.420  1.0
  P  P25  1  0.930  0.250  0.580  1.0
  Sn  Sn26  1  0.464  0.748  0.220  1.0
  Sn  Sn27  1  0.537  0.250  0.780  1.0
[/CIF]
.