The structure described by BiNbO4 crystallizes in the orthorhombic Pnna space group. Nb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 41°. Bi(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Nb(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Nb(1) and one Bi(1) atom. is represented by the CIF card [CIF]
data_NbBiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.040
_cell_length_b   5.741
_cell_length_c   11.731
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   339.423
_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  0.750  0.849  0.250  1.0
  Nb  Nb1  1  0.750  0.651  0.750  1.0
  Nb  Nb2  1  0.250  0.151  0.750  1.0
  Nb  Nb3  1  0.250  0.349  0.250  1.0
  Bi  Bi4  1  0.280  0.750  0.000  1.0
  Bi  Bi5  1  0.220  0.750  0.500  1.0
  Bi  Bi6  1  0.720  0.250  0.000  1.0
  Bi  Bi7  1  0.780  0.250  0.500  1.0
  O  O8  1  0.917  0.921  0.402  1.0
  O  O9  1  0.917  0.579  0.598  1.0
  O  O10  1  0.583  0.921  0.098  1.0
  O  O11  1  0.583  0.579  0.902  1.0
  O  O12  1  0.083  0.079  0.598  1.0
  O  O13  1  0.083  0.421  0.402  1.0
  O  O14  1  0.417  0.079  0.902  1.0
  O  O15  1  0.417  0.421  0.098  1.0
  O  O16  1  0.505  0.142  0.308  1.0
  O  O17  1  0.505  0.358  0.692  1.0
  O  O18  1  0.995  0.142  0.192  1.0
  O  O19  1  0.995  0.358  0.808  1.0
  O  O20  1  0.495  0.858  0.692  1.0
  O  O21  1  0.495  0.642  0.308  1.0
  O  O22  1  0.005  0.858  0.808  1.0
  O  O23  1  0.005  0.642  0.192  1.0
[/CIF]
.
The structure described by BiNbO4 crystallizes in the orthorhombic Pnna space group. Nb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 41°. Bi(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Nb(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Nb(1) and one Bi(1) atom. is represented by the CIF card [CIF]
data_NbBiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.040
_cell_length_b   5.741
_cell_length_c   11.731
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   339.423
_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  0.750  0.849  0.250  1.0
  Nb  Nb1  1  0.750  0.651  0.750  1.0
  Nb  Nb2  1  0.250  0.151  0.750  1.0
  Nb  Nb3  1  0.250  0.349  0.250  1.0
  Bi  Bi4  1  0.280  0.750  0.000  1.0
  Bi  Bi5  1  0.220  0.750  0.500  1.0
  Bi  Bi6  1  0.720  0.250  0.000  1.0
  Bi  Bi7  1  0.780  0.250  0.500  1.0
  O  O8  1  0.917  0.921  0.402  1.0
  O  O9  1  0.917  0.579  0.598  1.0
  O  O10  1  0.583  0.921  0.098  1.0
  O  O11  1  0.583  0.579  0.902  1.0
  O  O12  1  0.083  0.079  0.598  1.0
  O  O13  1  0.083  0.421  0.402  1.0
  O  O14  1  0.417  0.079  0.902  1.0
  O  O15  1  0.417  0.421  0.098  1.0
  O  O16  1  0.505  0.142  0.308  1.0
  O  O17  1  0.505  0.358  0.692  1.0
  O  O18  1  0.995  0.142  0.192  1.0
  O  O19  1  0.995  0.358  0.808  1.0
  O  O20  1  0.495  0.858  0.692  1.0
  O  O21  1  0.495  0.642  0.308  1.0
  O  O22  1  0.005  0.858  0.808  1.0
  O  O23  1  0.005  0.642  0.192  1.0
[/CIF]
.