The structure described by CrNbO4 is trigonal omega-derived structured and crystallizes in the tetragonal I-4m2 space group. Nb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NbO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra and edges with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to two equivalent Nb(1) and one Cr(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Nb(1) and two equivalent Cr(1) atoms. is represented by the CIF card [CIF]
data_NbCrO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.601
_cell_length_b   5.601
_cell_length_c   5.601
_cell_angle_alpha   138.606
_cell_angle_beta   138.607
_cell_angle_gamma   59.976
_symmetry_Int_Tables_number   1
_cell_volume   76.052
_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
  Nb  Nb0  1  1.000  0.000  1.000  1.0
  Cr  Cr1  1  0.750  0.250  0.500  1.0
  O  O2  1  0.540  0.040  0.500  1.0
  O  O3  1  0.207  0.207  0.000  1.0
  O  O4  1  0.960  0.460  0.500  1.0
  O  O5  1  0.793  0.793  1.000  1.0
[/CIF]
.
The structure described by CrNbO4 is trigonal omega-derived structured and crystallizes in the tetragonal I-4m2 space group. Nb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NbO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra and edges with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra and edges with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to two equivalent Nb(1) and one Cr(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Nb(1) and two equivalent Cr(1) atoms. is represented by the CIF card [CIF]
data_NbCrO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.601
_cell_length_b   5.601
_cell_length_c   5.601
_cell_angle_alpha   138.606
_cell_angle_beta   138.607
_cell_angle_gamma   59.976
_symmetry_Int_Tables_number   1
_cell_volume   76.052
_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
  Nb  Nb0  1  1.000  0.000  1.000  1.0
  Cr  Cr1  1  0.750  0.250  0.500  1.0
  O  O2  1  0.540  0.040  0.500  1.0
  O  O3  1  0.207  0.207  0.000  1.0
  O  O4  1  0.960  0.460  0.500  1.0
  O  O5  1  0.793  0.793  1.000  1.0
[/CIF]
.