The crystal structure described by LiNbNiO4 is Spinel-derived structured and crystallizes in the tetragonal P4_322 space group. Li(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form LiO6 octahedra that share corners with six equivalent Nb(1)O4 tetrahedra, edges with two equivalent Li(1)O6 octahedra, and edges with four equivalent Ni(1)O6 octahedra. Nb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NbO4 tetrahedra that share corners with six equivalent Li(1)O6 octahedra and corners with six equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. Ni(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Nb(1)O4 tetrahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with four equivalent Li(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Li(1), one Nb(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Nb(1), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_LiNbNiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.064
_cell_length_b   6.064
_cell_length_c   8.598
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.129
_cell_formula_units_Z   4
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  0.000  0.235  0.000  1.0
  Li  Li1  1  0.000  0.765  0.500  1.0
  Li  Li2  1  0.235  0.000  0.250  1.0
  Li  Li3  1  0.765  0.000  0.750  1.0
  Nb  Nb4  1  0.255  0.255  0.625  1.0
  Nb  Nb5  1  0.255  0.745  0.875  1.0
  Nb  Nb6  1  0.745  0.255  0.375  1.0
  Nb  Nb7  1  0.745  0.745  0.125  1.0
  Ni  Ni8  1  0.244  0.500  0.250  1.0
  Ni  Ni9  1  0.500  0.244  0.000  1.0
  Ni  Ni10  1  0.500  0.756  0.500  1.0
  Ni  Ni11  1  0.756  0.500  0.750  1.0
  O  O12  1  0.002  0.257  0.254  1.0
  O  O13  1  0.002  0.743  0.246  1.0
  O  O14  1  0.257  0.002  0.996  1.0
  O  O15  1  0.257  0.998  0.504  1.0
  O  O16  1  0.257  0.494  0.007  1.0
  O  O17  1  0.257  0.506  0.493  1.0
  O  O18  1  0.494  0.257  0.243  1.0
  O  O19  1  0.494  0.743  0.257  1.0
  O  O20  1  0.506  0.257  0.757  1.0
  O  O21  1  0.506  0.743  0.743  1.0
  O  O22  1  0.743  0.506  0.507  1.0
  O  O23  1  0.743  0.494  0.993  1.0
  O  O24  1  0.743  0.002  0.004  1.0
  O  O25  1  0.743  0.998  0.496  1.0
  O  O26  1  0.998  0.257  0.746  1.0
  O  O27  1  0.998  0.743  0.754  1.0
[/CIF]
.
The crystal structure described by LiNbNiO4 is Spinel-derived structured and crystallizes in the tetragonal P4_322 space group. Li(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form LiO6 octahedra that share corners with six equivalent Nb(1)O4 tetrahedra, edges with two equivalent Li(1)O6 octahedra, and edges with four equivalent Ni(1)O6 octahedra. Nb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NbO4 tetrahedra that share corners with six equivalent Li(1)O6 octahedra and corners with six equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. Ni(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Nb(1)O4 tetrahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with four equivalent Li(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to two equivalent Li(1), one Nb(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Nb(1), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_LiNbNiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.064
_cell_length_b   6.064
_cell_length_c   8.598
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.129
_cell_formula_units_Z   4
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  0.000  0.235  0.000  1.0
  Li  Li1  1  0.000  0.765  0.500  1.0
  Li  Li2  1  0.235  0.000  0.250  1.0
  Li  Li3  1  0.765  0.000  0.750  1.0
  Nb  Nb4  1  0.255  0.255  0.625  1.0
  Nb  Nb5  1  0.255  0.745  0.875  1.0
  Nb  Nb6  1  0.745  0.255  0.375  1.0
  Nb  Nb7  1  0.745  0.745  0.125  1.0
  Ni  Ni8  1  0.244  0.500  0.250  1.0
  Ni  Ni9  1  0.500  0.244  0.000  1.0
  Ni  Ni10  1  0.500  0.756  0.500  1.0
  Ni  Ni11  1  0.756  0.500  0.750  1.0
  O  O12  1  0.002  0.257  0.254  1.0
  O  O13  1  0.002  0.743  0.246  1.0
  O  O14  1  0.257  0.002  0.996  1.0
  O  O15  1  0.257  0.998  0.504  1.0
  O  O16  1  0.257  0.494  0.007  1.0
  O  O17  1  0.257  0.506  0.493  1.0
  O  O18  1  0.494  0.257  0.243  1.0
  O  O19  1  0.494  0.743  0.257  1.0
  O  O20  1  0.506  0.257  0.757  1.0
  O  O21  1  0.506  0.743  0.743  1.0
  O  O22  1  0.743  0.506  0.507  1.0
  O  O23  1  0.743  0.494  0.993  1.0
  O  O24  1  0.743  0.002  0.004  1.0
  O  O25  1  0.743  0.998  0.496  1.0
  O  O26  1  0.998  0.257  0.746  1.0
  O  O27  1  0.998  0.743  0.754  1.0
[/CIF]
.