The compound described by AgNbO3 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-26°. In the second Nb site, Nb(2) is bonded to one O(1), one O(5), two equivalent O(6), and two equivalent O(7) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-30°. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted trigonal planar geometry to one O(1), one O(4), and one O(6) atom. In the second Ag site, Ag(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. In the third Ag site, Ag(3) is bonded in a 8-coordinate geometry to two equivalent O(5), two equivalent O(6), and four equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Nb(2), one Ag(1), and one Ag(3) atom. In the second O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Nb(1), one Nb(2), and one Ag(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Nb(1), one Ag(1), and one Ag(2) atom. In the seventh O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms. is represented by the CIF file [CIF]
data_NbAgO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.662
_cell_length_b   5.767
_cell_length_c   15.766
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   514.849
_cell_formula_units_Z   8
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  0.245  0.233  0.625  1.0
  Nb  Nb1  1  0.245  0.233  0.375  1.0
  Nb  Nb2  1  0.755  0.733  0.375  1.0
  Nb  Nb3  1  0.755  0.733  0.625  1.0
  Nb  Nb4  1  0.756  0.800  0.125  1.0
  Nb  Nb5  1  0.756  0.800  0.875  1.0
  Nb  Nb6  1  0.244  0.300  0.875  1.0
  Nb  Nb7  1  0.244  0.300  0.125  1.0
  Ag  Ag8  1  0.256  0.763  0.750  1.0
  Ag  Ag9  1  0.256  0.763  0.250  1.0
  Ag  Ag10  1  0.744  0.263  0.250  1.0
  Ag  Ag11  1  0.744  0.263  0.750  1.0
  Ag  Ag12  1  0.259  0.742  0.500  1.0
  Ag  Ag13  1  0.741  0.242  0.500  1.0
  Ag  Ag14  1  0.259  0.790  0.000  1.0
  Ag  Ag15  1  0.741  0.290  0.000  1.0
  O  O16  1  0.316  0.266  0.750  1.0
  O  O17  1  0.316  0.266  0.250  1.0
  O  O18  1  0.684  0.766  0.250  1.0
  O  O19  1  0.684  0.766  0.750  1.0
  O  O20  1  0.184  0.286  0.500  1.0
  O  O21  1  0.816  0.786  0.500  1.0
  O  O22  1  0.470  0.994  0.608  1.0
  O  O23  1  0.470  0.994  0.392  1.0
  O  O24  1  0.530  0.494  0.392  1.0
  O  O25  1  0.530  0.494  0.608  1.0
  O  O26  1  0.971  0.048  0.642  1.0
  O  O27  1  0.971  0.048  0.358  1.0
  O  O28  1  0.029  0.548  0.358  1.0
  O  O29  1  0.029  0.548  0.642  1.0
  O  O30  1  0.801  0.741  0.000  1.0
  O  O31  1  0.199  0.241  0.000  1.0
  O  O32  1  0.960  0.471  0.141  1.0
  O  O33  1  0.960  0.471  0.859  1.0
  O  O34  1  0.040  0.971  0.859  1.0
  O  O35  1  0.040  0.971  0.141  1.0
  O  O36  1  0.543  0.049  0.110  1.0
  O  O37  1  0.543  0.049  0.890  1.0
  O  O38  1  0.457  0.549  0.890  1.0
  O  O39  1  0.457  0.549  0.110  1.0
[/CIF]
.
The compound described by AgNbO3 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-26°. In the second Nb site, Nb(2) is bonded to one O(1), one O(5), two equivalent O(6), and two equivalent O(7) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-30°. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted trigonal planar geometry to one O(1), one O(4), and one O(6) atom. In the second Ag site, Ag(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. In the third Ag site, Ag(3) is bonded in a 8-coordinate geometry to two equivalent O(5), two equivalent O(6), and four equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Nb(2), one Ag(1), and one Ag(3) atom. In the second O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Nb(1), one Nb(2), and one Ag(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Nb(1), one Ag(1), and one Ag(2) atom. In the seventh O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms. is represented by the CIF file [CIF]
data_NbAgO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.662
_cell_length_b   5.767
_cell_length_c   15.766
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   514.849
_cell_formula_units_Z   8
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  0.245  0.233  0.625  1.0
  Nb  Nb1  1  0.245  0.233  0.375  1.0
  Nb  Nb2  1  0.755  0.733  0.375  1.0
  Nb  Nb3  1  0.755  0.733  0.625  1.0
  Nb  Nb4  1  0.756  0.800  0.125  1.0
  Nb  Nb5  1  0.756  0.800  0.875  1.0
  Nb  Nb6  1  0.244  0.300  0.875  1.0
  Nb  Nb7  1  0.244  0.300  0.125  1.0
  Ag  Ag8  1  0.256  0.763  0.750  1.0
  Ag  Ag9  1  0.256  0.763  0.250  1.0
  Ag  Ag10  1  0.744  0.263  0.250  1.0
  Ag  Ag11  1  0.744  0.263  0.750  1.0
  Ag  Ag12  1  0.259  0.742  0.500  1.0
  Ag  Ag13  1  0.741  0.242  0.500  1.0
  Ag  Ag14  1  0.259  0.790  0.000  1.0
  Ag  Ag15  1  0.741  0.290  0.000  1.0
  O  O16  1  0.316  0.266  0.750  1.0
  O  O17  1  0.316  0.266  0.250  1.0
  O  O18  1  0.684  0.766  0.250  1.0
  O  O19  1  0.684  0.766  0.750  1.0
  O  O20  1  0.184  0.286  0.500  1.0
  O  O21  1  0.816  0.786  0.500  1.0
  O  O22  1  0.470  0.994  0.608  1.0
  O  O23  1  0.470  0.994  0.392  1.0
  O  O24  1  0.530  0.494  0.392  1.0
  O  O25  1  0.530  0.494  0.608  1.0
  O  O26  1  0.971  0.048  0.642  1.0
  O  O27  1  0.971  0.048  0.358  1.0
  O  O28  1  0.029  0.548  0.358  1.0
  O  O29  1  0.029  0.548  0.642  1.0
  O  O30  1  0.801  0.741  0.000  1.0
  O  O31  1  0.199  0.241  0.000  1.0
  O  O32  1  0.960  0.471  0.141  1.0
  O  O33  1  0.960  0.471  0.859  1.0
  O  O34  1  0.040  0.971  0.859  1.0
  O  O35  1  0.040  0.971  0.141  1.0
  O  O36  1  0.543  0.049  0.110  1.0
  O  O37  1  0.543  0.049  0.890  1.0
  O  O38  1  0.457  0.549  0.890  1.0
  O  O39  1  0.457  0.549  0.110  1.0
[/CIF]
.