The material structure described by Bi3TiNbO9 is Esseneite-like structured and crystallizes in the monoclinic P2_1 space group. Ti(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. Nb(1) is bonded in a distorted octahedral geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 8-coordinate geometry to one O(6), one O(7), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(8), and two equivalent O(9) atoms. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(8), and two equivalent O(9) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ti(1), one Bi(2), and one Bi(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Nb(1), one Bi(2), and one Bi(3) atom. In the third O site, O(3) is bonded in a see-saw-like geometry to one Ti(1), one Nb(1), and two equivalent Bi(1) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ti(1), one Nb(1), and two equivalent Bi(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ti(1), one Nb(1), and two equivalent Bi(1) atoms. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Ti(1), one Nb(1), and one Bi(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ti(1), one Nb(1), and one Bi(1) atom. In the eighth O site, O(8) is bonded to two equivalent Bi(2) and two equivalent Bi(3) atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the ninth O site, O(9) is bonded to two equivalent Bi(2) and two equivalent Bi(3) atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_TiNb(BiO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.507
_cell_length_b   5.438
_cell_length_c   13.022
_cell_angle_alpha   78.228
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   381.782
_cell_formula_units_Z   2
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
  Ti  Ti0  1  0.036  0.663  0.177  1.0
  Ti  Ti1  1  0.536  0.337  0.823  1.0
  Nb  Nb2  1  0.039  0.834  0.824  1.0
  Nb  Nb3  1  0.539  0.166  0.176  1.0
  Bi  Bi4  1  0.986  0.255  0.001  1.0
  Bi  Bi5  1  0.486  0.745  0.999  1.0
  Bi  Bi6  1  0.997  0.023  0.399  1.0
  Bi  Bi7  1  0.992  0.429  0.600  1.0
  Bi  Bi8  1  0.497  0.977  0.601  1.0
  Bi  Bi9  1  0.492  0.571  0.400  1.0
  O  O10  1  0.051  0.656  0.315  1.0
  O  O11  1  0.049  0.970  0.680  1.0
  O  O12  1  0.551  0.344  0.685  1.0
  O  O13  1  0.549  0.030  0.320  1.0
  O  O14  1  0.082  0.673  0.998  1.0
  O  O15  1  0.582  0.327  0.002  1.0
  O  O16  1  0.275  0.969  0.132  1.0
  O  O17  1  0.277  0.102  0.868  1.0
  O  O18  1  0.775  0.031  0.868  1.0
  O  O19  1  0.777  0.898  0.132  1.0
  O  O20  1  0.357  0.470  0.172  1.0
  O  O21  1  0.363  0.638  0.827  1.0
  O  O22  1  0.857  0.530  0.828  1.0
  O  O23  1  0.863  0.362  0.173  1.0
  O  O24  1  0.262  0.258  0.498  1.0
  O  O25  1  0.262  0.756  0.502  1.0
  O  O26  1  0.762  0.742  0.502  1.0
  O  O27  1  0.762  0.244  0.498  1.0
[/CIF]
.
The material structure described by Bi3TiNbO9 is Esseneite-like structured and crystallizes in the monoclinic P2_1 space group. Ti(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. Nb(1) is bonded in a distorted octahedral geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 8-coordinate geometry to one O(6), one O(7), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(8), and two equivalent O(9) atoms. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(8), and two equivalent O(9) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ti(1), one Bi(2), and one Bi(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Nb(1), one Bi(2), and one Bi(3) atom. In the third O site, O(3) is bonded in a see-saw-like geometry to one Ti(1), one Nb(1), and two equivalent Bi(1) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ti(1), one Nb(1), and two equivalent Bi(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ti(1), one Nb(1), and two equivalent Bi(1) atoms. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Ti(1), one Nb(1), and one Bi(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ti(1), one Nb(1), and one Bi(1) atom. In the eighth O site, O(8) is bonded to two equivalent Bi(2) and two equivalent Bi(3) atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. In the ninth O site, O(9) is bonded to two equivalent Bi(2) and two equivalent Bi(3) atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_TiNb(BiO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.507
_cell_length_b   5.438
_cell_length_c   13.022
_cell_angle_alpha   78.228
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   381.782
_cell_formula_units_Z   2
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
  Ti  Ti0  1  0.036  0.663  0.177  1.0
  Ti  Ti1  1  0.536  0.337  0.823  1.0
  Nb  Nb2  1  0.039  0.834  0.824  1.0
  Nb  Nb3  1  0.539  0.166  0.176  1.0
  Bi  Bi4  1  0.986  0.255  0.001  1.0
  Bi  Bi5  1  0.486  0.745  0.999  1.0
  Bi  Bi6  1  0.997  0.023  0.399  1.0
  Bi  Bi7  1  0.992  0.429  0.600  1.0
  Bi  Bi8  1  0.497  0.977  0.601  1.0
  Bi  Bi9  1  0.492  0.571  0.400  1.0
  O  O10  1  0.051  0.656  0.315  1.0
  O  O11  1  0.049  0.970  0.680  1.0
  O  O12  1  0.551  0.344  0.685  1.0
  O  O13  1  0.549  0.030  0.320  1.0
  O  O14  1  0.082  0.673  0.998  1.0
  O  O15  1  0.582  0.327  0.002  1.0
  O  O16  1  0.275  0.969  0.132  1.0
  O  O17  1  0.277  0.102  0.868  1.0
  O  O18  1  0.775  0.031  0.868  1.0
  O  O19  1  0.777  0.898  0.132  1.0
  O  O20  1  0.357  0.470  0.172  1.0
  O  O21  1  0.363  0.638  0.827  1.0
  O  O22  1  0.857  0.530  0.828  1.0
  O  O23  1  0.863  0.362  0.173  1.0
  O  O24  1  0.262  0.258  0.498  1.0
  O  O25  1  0.262  0.756  0.502  1.0
  O  O26  1  0.762  0.742  0.502  1.0
  O  O27  1  0.762  0.244  0.498  1.0
[/CIF]
.