The structure described by Bi2TiO5 crystallizes in the orthorhombic Cmcm space group. Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 31°. Bi(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ti(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded to one Ti(1) and three equivalent Bi(1) atoms to form OTiBi3 tetrahedra that share corners with three equivalent O(2)TiBi3 tetrahedra,  a cornercorner with one O(3)Ti2Bi2 trigonal pyramid, edges with two equivalent O(2)TiBi3 tetrahedra, and edges with two equivalent O(3)Ti2Bi2 trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Ti(1) and two equivalent Bi(1) atoms to form distorted OTi2Bi2 trigonal pyramids that share corners with two equivalent O(2)TiBi3 tetrahedra, corners with two equivalent O(3)Ti2Bi2 trigonal pyramids, and edges with four equivalent O(2)TiBi3 tetrahedra. is represented by the CIF file [CIF]
data_TiBi2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.492
_cell_length_b   6.492
_cell_length_c   10.422
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   143.486
_symmetry_Int_Tables_number   1
_cell_volume   261.361
_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  0.164  0.836  0.250  1.0
  Ti  Ti1  1  0.836  0.164  0.750  1.0
  Bi  Bi2  1  0.143  0.857  0.926  1.0
  Bi  Bi3  1  0.143  0.857  0.574  1.0
  Bi  Bi4  1  0.857  0.143  0.074  1.0
  Bi  Bi5  1  0.857  0.143  0.426  1.0
  O  O6  1  0.063  0.937  0.380  1.0
  O  O7  1  0.063  0.937  0.120  1.0
  O  O8  1  0.723  0.277  0.916  1.0
  O  O9  1  0.723  0.277  0.584  1.0
  O  O10  1  0.291  0.709  0.750  1.0
  O  O11  1  0.709  0.291  0.250  1.0
  O  O12  1  0.277  0.723  0.084  1.0
  O  O13  1  0.277  0.723  0.416  1.0
  O  O14  1  0.937  0.063  0.620  1.0
  O  O15  1  0.937  0.063  0.880  1.0
[/CIF]
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The structure described by Bi2TiO5 crystallizes in the orthorhombic Cmcm space group. Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 31°. Bi(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ti(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded to one Ti(1) and three equivalent Bi(1) atoms to form OTiBi3 tetrahedra that share corners with three equivalent O(2)TiBi3 tetrahedra,  a cornercorner with one O(3)Ti2Bi2 trigonal pyramid, edges with two equivalent O(2)TiBi3 tetrahedra, and edges with two equivalent O(3)Ti2Bi2 trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Ti(1) and two equivalent Bi(1) atoms to form distorted OTi2Bi2 trigonal pyramids that share corners with two equivalent O(2)TiBi3 tetrahedra, corners with two equivalent O(3)Ti2Bi2 trigonal pyramids, and edges with four equivalent O(2)TiBi3 tetrahedra. is represented by the CIF file [CIF]
data_TiBi2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.492
_cell_length_b   6.492
_cell_length_c   10.422
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   143.486
_symmetry_Int_Tables_number   1
_cell_volume   261.361
_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  0.164  0.836  0.250  1.0
  Ti  Ti1  1  0.836  0.164  0.750  1.0
  Bi  Bi2  1  0.143  0.857  0.926  1.0
  Bi  Bi3  1  0.143  0.857  0.574  1.0
  Bi  Bi4  1  0.857  0.143  0.074  1.0
  Bi  Bi5  1  0.857  0.143  0.426  1.0
  O  O6  1  0.063  0.937  0.380  1.0
  O  O7  1  0.063  0.937  0.120  1.0
  O  O8  1  0.723  0.277  0.916  1.0
  O  O9  1  0.723  0.277  0.584  1.0
  O  O10  1  0.291  0.709  0.750  1.0
  O  O11  1  0.709  0.291  0.250  1.0
  O  O12  1  0.277  0.723  0.084  1.0
  O  O13  1  0.277  0.723  0.416  1.0
  O  O14  1  0.937  0.063  0.620  1.0
  O  O15  1  0.937  0.063  0.880  1.0
[/CIF]
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