The structure described by NaNiO2 is Caswellsilverite structured and crystallizes in the monoclinic C2/m space group. Na(1) is bonded to six equivalent O(1) atoms to form NaO6 octahedra that share corners with six equivalent Ni(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-14°. Ni(1) is bonded to six equivalent O(1) atoms to form NiO6 octahedra that share corners with six equivalent Na(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-14°. O(1) is bonded to three equivalent Na(1) and three equivalent Ni(1) atoms to form a mixture of corner and edge-sharing ONa3Ni3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_NaNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.825
_cell_length_b   3.014
_cell_length_c   5.405
_cell_angle_alpha   76.266
_cell_angle_beta   74.850
_cell_angle_gamma   62.051
_symmetry_Int_Tables_number   1
_cell_volume   38.895
_cell_formula_units_Z   1
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
  Na  Na0  1  0.500  0.500  0.500  1.0
  Ni  Ni1  1  0.000  0.000  0.000  1.0
  O  O2  1  0.285  0.232  0.197  1.0
  O  O3  1  0.715  0.768  0.803  1.0
[/CIF]
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The structure described by NaNiO2 is Caswellsilverite structured and crystallizes in the monoclinic C2/m space group. Na(1) is bonded to six equivalent O(1) atoms to form NaO6 octahedra that share corners with six equivalent Ni(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-14°. Ni(1) is bonded to six equivalent O(1) atoms to form NiO6 octahedra that share corners with six equivalent Na(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-14°. O(1) is bonded to three equivalent Na(1) and three equivalent Ni(1) atoms to form a mixture of corner and edge-sharing ONa3Ni3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_NaNiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.825
_cell_length_b   3.014
_cell_length_c   5.405
_cell_angle_alpha   76.266
_cell_angle_beta   74.850
_cell_angle_gamma   62.051
_symmetry_Int_Tables_number   1
_cell_volume   38.895
_cell_formula_units_Z   1
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
  Na  Na0  1  0.500  0.500  0.500  1.0
  Ni  Ni1  1  0.000  0.000  0.000  1.0
  O  O2  1  0.285  0.232  0.197  1.0
  O  O3  1  0.715  0.768  0.803  1.0
[/CIF]
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