The crystal structure described by Bi2GaTaO7 crystallizes in the orthorhombic Imma space group. Ta(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form TaO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with four equivalent Ga(1)O6 octahedra, edges with two equivalent Bi(2)O8 hexagonal bipyramids, and edges with four equivalent Bi(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 45-46°. Ga(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form GaO6 octahedra that share corners with two equivalent Ga(1)O6 octahedra, corners with four equivalent Ta(1)O6 octahedra, edges with two equivalent Bi(1)O8 hexagonal bipyramids, and edges with four equivalent Bi(2)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-48°. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms to form distorted BiO8 hexagonal bipyramids that share edges with two equivalent Bi(1)O8 hexagonal bipyramids, edges with four equivalent Bi(2)O8 hexagonal bipyramids, edges with two equivalent Ga(1)O6 octahedra, and edges with four equivalent Ta(1)O6 octahedra. In the second Bi site, Bi(2) is bonded to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms to form distorted BiO8 hexagonal bipyramids that share edges with two equivalent Bi(2)O8 hexagonal bipyramids, edges with four equivalent Bi(1)O8 hexagonal bipyramids, edges with two equivalent Ta(1)O6 octahedra, and edges with four equivalent Ga(1)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ta(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ga(1) and two equivalent Bi(2) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ta(1), one Ga(1), one Bi(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded to two equivalent Bi(1) and two equivalent Bi(2) atoms to form corner-sharing OBi4 tetrahedra. is represented by the CIF card [CIF]
data_TaGaBi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.450
_cell_length_b   7.450
_cell_length_c   7.450
_cell_angle_alpha   120.559
_cell_angle_beta   119.675
_cell_angle_gamma   89.799
_symmetry_Int_Tables_number   1
_cell_volume   291.783
_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
  Ta  Ta0  1  0.500  0.000  0.500  1.0
  Ta  Ta1  1  0.000  0.000  0.000  1.0
  Ga  Ga2  1  0.500  0.000  0.000  1.0
  Ga  Ga3  1  0.500  0.500  0.500  1.0
  Bi  Bi4  1  0.000  0.500  0.000  1.0
  Bi  Bi5  1  0.000  0.000  0.500  1.0
  Bi  Bi6  1  0.000  0.500  0.500  1.0
  Bi  Bi7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.823  0.073  0.750  1.0
  O  O9  1  0.422  0.672  0.750  1.0
  O  O10  1  0.829  0.677  0.756  1.0
  O  O11  1  0.422  0.073  0.744  1.0
  O  O12  1  0.829  0.073  0.152  1.0
  O  O13  1  0.422  0.677  0.348  1.0
  O  O14  1  0.177  0.927  0.250  1.0
  O  O15  1  0.578  0.328  0.250  1.0
  O  O16  1  0.171  0.323  0.244  1.0
  O  O17  1  0.578  0.927  0.256  1.0
  O  O18  1  0.171  0.927  0.848  1.0
  O  O19  1  0.578  0.323  0.652  1.0
  O  O20  1  0.877  0.627  0.250  1.0
  O  O21  1  0.123  0.373  0.750  1.0
[/CIF]
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The crystal structure described by Bi2GaTaO7 crystallizes in the orthorhombic Imma space group. Ta(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form TaO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with four equivalent Ga(1)O6 octahedra, edges with two equivalent Bi(2)O8 hexagonal bipyramids, and edges with four equivalent Bi(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 45-46°. Ga(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form GaO6 octahedra that share corners with two equivalent Ga(1)O6 octahedra, corners with four equivalent Ta(1)O6 octahedra, edges with two equivalent Bi(1)O8 hexagonal bipyramids, and edges with four equivalent Bi(2)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-48°. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms to form distorted BiO8 hexagonal bipyramids that share edges with two equivalent Bi(1)O8 hexagonal bipyramids, edges with four equivalent Bi(2)O8 hexagonal bipyramids, edges with two equivalent Ga(1)O6 octahedra, and edges with four equivalent Ta(1)O6 octahedra. In the second Bi site, Bi(2) is bonded to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms to form distorted BiO8 hexagonal bipyramids that share edges with two equivalent Bi(2)O8 hexagonal bipyramids, edges with four equivalent Bi(1)O8 hexagonal bipyramids, edges with two equivalent Ta(1)O6 octahedra, and edges with four equivalent Ga(1)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ta(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Ga(1) and two equivalent Bi(2) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ta(1), one Ga(1), one Bi(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded to two equivalent Bi(1) and two equivalent Bi(2) atoms to form corner-sharing OBi4 tetrahedra. is represented by the CIF card [CIF]
data_TaGaBi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.450
_cell_length_b   7.450
_cell_length_c   7.450
_cell_angle_alpha   120.559
_cell_angle_beta   119.675
_cell_angle_gamma   89.799
_symmetry_Int_Tables_number   1
_cell_volume   291.783
_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
  Ta  Ta0  1  0.500  0.000  0.500  1.0
  Ta  Ta1  1  0.000  0.000  0.000  1.0
  Ga  Ga2  1  0.500  0.000  0.000  1.0
  Ga  Ga3  1  0.500  0.500  0.500  1.0
  Bi  Bi4  1  0.000  0.500  0.000  1.0
  Bi  Bi5  1  0.000  0.000  0.500  1.0
  Bi  Bi6  1  0.000  0.500  0.500  1.0
  Bi  Bi7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.823  0.073  0.750  1.0
  O  O9  1  0.422  0.672  0.750  1.0
  O  O10  1  0.829  0.677  0.756  1.0
  O  O11  1  0.422  0.073  0.744  1.0
  O  O12  1  0.829  0.073  0.152  1.0
  O  O13  1  0.422  0.677  0.348  1.0
  O  O14  1  0.177  0.927  0.250  1.0
  O  O15  1  0.578  0.328  0.250  1.0
  O  O16  1  0.171  0.323  0.244  1.0
  O  O17  1  0.578  0.927  0.256  1.0
  O  O18  1  0.171  0.927  0.848  1.0
  O  O19  1  0.578  0.323  0.652  1.0
  O  O20  1  0.877  0.627  0.250  1.0
  O  O21  1  0.123  0.373  0.750  1.0
[/CIF]
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