The material structure described by CrNbO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Pbcn 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, corners with six equivalent Cr(1)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Nb(1) and one Cr(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar 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   4.519
_cell_length_b   11.618
_cell_length_c   4.911
_cell_angle_alpha   90.000
_cell_angle_beta   89.999
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   257.827
_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
  Nb  Nb0  1  1.000  0.170  0.250  1.0
  Nb  Nb1  1  1.000  0.830  0.750  1.0
  Nb  Nb2  1  0.500  0.670  0.250  1.0
  Nb  Nb3  1  0.500  0.330  0.750  1.0
  Cr  Cr4  1  1.000  0.566  0.750  1.0
  Cr  Cr5  1  0.500  0.066  0.750  1.0
  Cr  Cr6  1  1.000  0.434  0.250  1.0
  Cr  Cr7  1  0.500  0.934  0.250  1.0
  O  O8  1  0.230  0.310  0.421  1.0
  O  O9  1  0.230  0.690  0.921  1.0
  O  O10  1  0.270  0.190  0.921  1.0
  O  O11  1  0.270  0.810  0.421  1.0
  O  O12  1  0.730  0.190  0.579  1.0
  O  O13  1  0.730  0.810  0.079  1.0
  O  O14  1  0.770  0.690  0.579  1.0
  O  O15  1  0.770  0.310  0.079  1.0
  O  O16  1  0.261  0.059  0.418  1.0
  O  O17  1  0.261  0.941  0.918  1.0
  O  O18  1  0.239  0.441  0.918  1.0
  O  O19  1  0.239  0.559  0.418  1.0
  O  O20  1  0.761  0.441  0.582  1.0
  O  O21  1  0.761  0.559  0.082  1.0
  O  O22  1  0.739  0.059  0.082  1.0
  O  O23  1  0.739  0.941  0.582  1.0
[/CIF]
.
The material structure described by CrNbO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Pbcn 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, corners with six equivalent Cr(1)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Nb(1) and one Cr(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar 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   4.519
_cell_length_b   11.618
_cell_length_c   4.911
_cell_angle_alpha   90.000
_cell_angle_beta   89.999
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   257.827
_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
  Nb  Nb0  1  1.000  0.170  0.250  1.0
  Nb  Nb1  1  1.000  0.830  0.750  1.0
  Nb  Nb2  1  0.500  0.670  0.250  1.0
  Nb  Nb3  1  0.500  0.330  0.750  1.0
  Cr  Cr4  1  1.000  0.566  0.750  1.0
  Cr  Cr5  1  0.500  0.066  0.750  1.0
  Cr  Cr6  1  1.000  0.434  0.250  1.0
  Cr  Cr7  1  0.500  0.934  0.250  1.0
  O  O8  1  0.230  0.310  0.421  1.0
  O  O9  1  0.230  0.690  0.921  1.0
  O  O10  1  0.270  0.190  0.921  1.0
  O  O11  1  0.270  0.810  0.421  1.0
  O  O12  1  0.730  0.190  0.579  1.0
  O  O13  1  0.730  0.810  0.079  1.0
  O  O14  1  0.770  0.690  0.579  1.0
  O  O15  1  0.770  0.310  0.079  1.0
  O  O16  1  0.261  0.059  0.418  1.0
  O  O17  1  0.261  0.941  0.918  1.0
  O  O18  1  0.239  0.441  0.918  1.0
  O  O19  1  0.239  0.559  0.418  1.0
  O  O20  1  0.761  0.441  0.582  1.0
  O  O21  1  0.761  0.559  0.082  1.0
  O  O22  1  0.739  0.059  0.082  1.0
  O  O23  1  0.739  0.941  0.582  1.0
[/CIF]
.