The structure described by Li2NiSiO4 is beta beryllia-derived structured and crystallizes in the triclinic P1 space group. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(10), one O(13), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Si(3)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(14), one O(2), one O(8), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, and  an edgeedge with one Si(4)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(11), one O(16), one O(3), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(12), one O(15), one O(4), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. In the fifth Li site, Li(5) is bonded to one O(1), one O(11), one O(13), and one O(5) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Ni(4)O4 tetrahedra. In the sixth Li site, Li(6) is bonded to one O(12), one O(14), one O(2), and one O(6) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Ni(2)O4 tetrahedra. In the seventh Li site, Li(7) is bonded to one O(16), one O(3), one O(8), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Ni(3)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(10), one O(15), one O(4), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Ni(1)O4 tetrahedra. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(10), one O(15), and one O(6) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the second Ni site, Ni(2) is bonded to one O(12), one O(14), one O(4), and one O(8) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Li(6)O4 tetrahedra. In the third Ni site, Ni(3) is bonded to one O(16), one O(2), one O(5), and one O(9) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Li(7)O4 tetrahedra. In the fourth Ni site, Ni(4) is bonded to one O(11), one O(13), one O(3), and one O(7) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Li(5)O4 tetrahedra. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(3), one O(5), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(10), one O(14), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(11), one O(15), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(16), one O(2), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(5), one Ni(1), and one Si(3) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the second O site, O(2) is bonded to one Li(2), one Li(6), one Ni(3), and one Si(4) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the third O site, O(3) is bonded to one Li(3), one Li(7), one Ni(4), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the fourth O site, O(4) is bonded to one Li(4), one Li(8), one Ni(2), and one Si(2) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the fifth O site, O(5) is bonded to one Li(3), one Li(5), one Ni(3), and one Si(1) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the sixth O site, O(6) is bonded to one Li(4), one Li(6), one Ni(1), and one Si(2) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the seventh O site, O(7) is bonded to one Li(1), one Li(8), one Ni(4), and one Si(3) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the eighth O site, O(8) is bonded to one Li(2), one Li(7), one Ni(2), and one Si(4) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the ninth O site, O(9) is bonded to one Li(2), one Li(7), one Ni(3), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the tenth O site, O(10) is bonded to one Li(1), one Li(8), one Ni(1), and one Si(2) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the eleventh O site, O(11) is bonded to one Li(3), one Li(5), one Ni(4), and one Si(3) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the twelfth O site, O(12) is bonded to one Li(4), one Li(6), one Ni(2), and one Si(4) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the thirteenth O site, O(13) is bonded to one Li(1), one Li(5), one Ni(4), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the fourteenth O site, O(14) is bonded to one Li(2), one Li(6), one Ni(2), and one Si(2) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the fifteenth O site, O(15) is bonded to one Li(4), one Li(8), one Ni(1), and one Si(3) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the sixteenth O site, O(16) is bonded to one Li(3), one Li(7), one Ni(3), and one Si(4) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2SiNiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.228
_cell_length_b   5.367
_cell_length_c   6.268
_cell_angle_alpha   88.283
_cell_angle_beta   89.364
_cell_angle_gamma   87.358
_symmetry_Int_Tables_number   1
_cell_volume   175.622
_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  0.811  0.172  0.748  1.0
  Li  Li1  1  0.190  0.825  0.252  1.0
  Li  Li2  1  0.310  0.315  0.492  1.0
  Li  Li3  1  0.688  0.687  0.009  1.0
  Ni  Ni4  1  0.317  0.326  0.988  1.0
  Ni  Ni5  1  0.686  0.670  0.509  1.0
  O  O6  1  0.214  0.130  0.747  1.0
  O  O7  1  0.786  0.869  0.256  1.0
  O  O8  1  0.135  0.206  0.244  1.0
  O  O9  1  0.864  0.799  0.753  1.0
  O  O10  1  0.695  0.305  0.029  1.0
  O  O11  1  0.304  0.693  0.538  1.0
  O  O12  1  0.692  0.304  0.461  1.0
  O  O13  1  0.304  0.698  0.973  1.0
  Si  Si14  1  0.821  0.174  0.248  1.0
  Si  Si15  1  0.179  0.825  0.752  1.0
[/CIF]
.
The structure described by Li2NiSiO4 is beta beryllia-derived structured and crystallizes in the triclinic P1 space group. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(10), one O(13), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Si(3)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(14), one O(2), one O(8), and one O(9) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, and  an edgeedge with one Si(4)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(11), one O(16), one O(3), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(12), one O(15), one O(4), and one O(6) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. In the fifth Li site, Li(5) is bonded to one O(1), one O(11), one O(13), and one O(5) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Ni(4)O4 tetrahedra. In the sixth Li site, Li(6) is bonded to one O(12), one O(14), one O(2), and one O(6) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Ni(2)O4 tetrahedra. In the seventh Li site, Li(7) is bonded to one O(16), one O(3), one O(8), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Ni(3)O4 tetrahedra. In the eighth Li site, Li(8) is bonded to one O(10), one O(15), one O(4), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Ni(1)O4 tetrahedra. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(1), one O(10), one O(15), and one O(6) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the second Ni site, Ni(2) is bonded to one O(12), one O(14), one O(4), and one O(8) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Li(6)O4 tetrahedra. In the third Ni site, Ni(3) is bonded to one O(16), one O(2), one O(5), and one O(9) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Li(7)O4 tetrahedra. In the fourth Ni site, Ni(4) is bonded to one O(11), one O(13), one O(3), and one O(7) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(7)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and  an edgeedge with one Li(5)O4 tetrahedra. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(3), one O(5), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(10), one O(14), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, and  an edgeedge with one Li(4)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(11), one O(15), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(16), one O(2), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(5), one Ni(1), and one Si(3) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the second O site, O(2) is bonded to one Li(2), one Li(6), one Ni(3), and one Si(4) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the third O site, O(3) is bonded to one Li(3), one Li(7), one Ni(4), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the fourth O site, O(4) is bonded to one Li(4), one Li(8), one Ni(2), and one Si(2) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi trigonal pyramids. In the fifth O site, O(5) is bonded to one Li(3), one Li(5), one Ni(3), and one Si(1) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the sixth O site, O(6) is bonded to one Li(4), one Li(6), one Ni(1), and one Si(2) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the seventh O site, O(7) is bonded to one Li(1), one Li(8), one Ni(4), and one Si(3) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the eighth O site, O(8) is bonded to one Li(2), one Li(7), one Ni(2), and one Si(4) atom to form a mixture of corner and edge-sharing OLi2SiNi tetrahedra. In the ninth O site, O(9) is bonded to one Li(2), one Li(7), one Ni(3), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the tenth O site, O(10) is bonded to one Li(1), one Li(8), one Ni(1), and one Si(2) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the eleventh O site, O(11) is bonded to one Li(3), one Li(5), one Ni(4), and one Si(3) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the twelfth O site, O(12) is bonded to one Li(4), one Li(6), one Ni(2), and one Si(4) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the thirteenth O site, O(13) is bonded to one Li(1), one Li(5), one Ni(4), and one Si(1) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the fourteenth O site, O(14) is bonded to one Li(2), one Li(6), one Ni(2), and one Si(2) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the fifteenth O site, O(15) is bonded to one Li(4), one Li(8), one Ni(1), and one Si(3) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. In the sixteenth O site, O(16) is bonded to one Li(3), one Li(7), one Ni(3), and one Si(4) atom to form a mixture of distorted corner and edge-sharing OLi2SiNi tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2SiNiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.228
_cell_length_b   5.367
_cell_length_c   6.268
_cell_angle_alpha   88.283
_cell_angle_beta   89.364
_cell_angle_gamma   87.358
_symmetry_Int_Tables_number   1
_cell_volume   175.622
_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  0.811  0.172  0.748  1.0
  Li  Li1  1  0.190  0.825  0.252  1.0
  Li  Li2  1  0.310  0.315  0.492  1.0
  Li  Li3  1  0.688  0.687  0.009  1.0
  Ni  Ni4  1  0.317  0.326  0.988  1.0
  Ni  Ni5  1  0.686  0.670  0.509  1.0
  O  O6  1  0.214  0.130  0.747  1.0
  O  O7  1  0.786  0.869  0.256  1.0
  O  O8  1  0.135  0.206  0.244  1.0
  O  O9  1  0.864  0.799  0.753  1.0
  O  O10  1  0.695  0.305  0.029  1.0
  O  O11  1  0.304  0.693  0.538  1.0
  O  O12  1  0.692  0.304  0.461  1.0
  O  O13  1  0.304  0.698  0.973  1.0
  Si  Si14  1  0.821  0.174  0.248  1.0
  Si  Si15  1  0.179  0.825  0.752  1.0
[/CIF]
.