The material structure described by NaCrO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Na(1) is bonded to six equivalent O(1) atoms to form distorted NaO6 octahedra that share corners with six equivalent Cr(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 11°. Cr(1) is bonded to six equivalent O(1) atoms to form CrO6 octahedra that share corners with six equivalent Na(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 11°. O(1) is bonded to three equivalent Na(1) and three equivalent Cr(1) atoms to form a mixture of corner and edge-sharing ONa3Cr3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_NaCrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.531
_cell_length_b   5.531
_cell_length_c   5.531
_cell_angle_alpha   31.375
_cell_angle_beta   31.375
_cell_angle_gamma   31.375
_symmetry_Int_Tables_number   1
_cell_volume   40.701
_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
  Cr  Cr1  1  0.000  0.000  0.000  1.0
  O  O2  1  0.267  0.267  0.267  1.0
  O  O3  1  0.733  0.733  0.733  1.0
[/CIF]
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The material structure described by NaCrO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Na(1) is bonded to six equivalent O(1) atoms to form distorted NaO6 octahedra that share corners with six equivalent Cr(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 11°. Cr(1) is bonded to six equivalent O(1) atoms to form CrO6 octahedra that share corners with six equivalent Na(1)O6 octahedra, edges with six equivalent Na(1)O6 octahedra, and edges with six equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 11°. O(1) is bonded to three equivalent Na(1) and three equivalent Cr(1) atoms to form a mixture of corner and edge-sharing ONa3Cr3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_NaCrO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.531
_cell_length_b   5.531
_cell_length_c   5.531
_cell_angle_alpha   31.375
_cell_angle_beta   31.375
_cell_angle_gamma   31.375
_symmetry_Int_Tables_number   1
_cell_volume   40.701
_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
  Cr  Cr1  1  0.000  0.000  0.000  1.0
  O  O2  1  0.267  0.267  0.267  1.0
  O  O3  1  0.733  0.733  0.733  1.0
[/CIF]
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