The material structure described by (KTaWO6)2O2 crystallizes in the orthorhombic Imma space group. The structure consists of four water atoms inside a KTaWO6 framework. In the KTaWO6 framework, K(1) is bonded in a hexagonal planar geometry to two equivalent O(1) and four equivalent O(3) atoms. 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 and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-38°. W(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-37°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent W(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Ta(1), and one W(1) atom. is represented by the CIF card [CIF]
data_KTaWO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.476
_cell_length_b   7.476
_cell_length_c   7.476
_cell_angle_alpha   120.083
_cell_angle_beta   119.609
_cell_angle_gamma   90.267
_symmetry_Int_Tables_number   1
_cell_volume   296.084
_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
  K  K0  1  0.000  0.500  0.000  1.0
  K  K1  1  0.000  0.000  0.500  1.0
  Ta  Ta2  1  0.500  0.000  0.500  1.0
  Ta  Ta3  1  0.000  0.000  0.000  1.0
  W  W4  1  0.500  0.000  0.000  1.0
  W  W5  1  0.500  0.500  0.500  1.0
  O  O6  1  0.812  0.062  0.750  1.0
  O  O7  1  0.443  0.693  0.750  1.0
  O  O8  1  0.804  0.687  0.747  1.0
  O  O9  1  0.440  0.057  0.753  1.0
  O  O10  1  0.804  0.057  0.117  1.0
  O  O11  1  0.440  0.687  0.383  1.0
  O  O12  1  0.188  0.938  0.250  1.0
  O  O13  1  0.557  0.307  0.250  1.0
  O  O14  1  0.196  0.313  0.253  1.0
  O  O15  1  0.560  0.943  0.247  1.0
  O  O16  1  0.196  0.943  0.883  1.0
  O  O17  1  0.560  0.313  0.617  1.0
  O  O18  1  0.000  0.500  0.500  1.0
  O  O19  1  0.500  0.500  0.000  1.0
[/CIF]
.
The material structure described by (KTaWO6)2O2 crystallizes in the orthorhombic Imma space group. The structure consists of four water atoms inside a KTaWO6 framework. In the KTaWO6 framework, K(1) is bonded in a hexagonal planar geometry to two equivalent O(1) and four equivalent O(3) atoms. 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 and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-38°. W(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-37°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent W(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Ta(1), and one W(1) atom. is represented by the CIF card [CIF]
data_KTaWO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.476
_cell_length_b   7.476
_cell_length_c   7.476
_cell_angle_alpha   120.083
_cell_angle_beta   119.609
_cell_angle_gamma   90.267
_symmetry_Int_Tables_number   1
_cell_volume   296.084
_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
  K  K0  1  0.000  0.500  0.000  1.0
  K  K1  1  0.000  0.000  0.500  1.0
  Ta  Ta2  1  0.500  0.000  0.500  1.0
  Ta  Ta3  1  0.000  0.000  0.000  1.0
  W  W4  1  0.500  0.000  0.000  1.0
  W  W5  1  0.500  0.500  0.500  1.0
  O  O6  1  0.812  0.062  0.750  1.0
  O  O7  1  0.443  0.693  0.750  1.0
  O  O8  1  0.804  0.687  0.747  1.0
  O  O9  1  0.440  0.057  0.753  1.0
  O  O10  1  0.804  0.057  0.117  1.0
  O  O11  1  0.440  0.687  0.383  1.0
  O  O12  1  0.188  0.938  0.250  1.0
  O  O13  1  0.557  0.307  0.250  1.0
  O  O14  1  0.196  0.313  0.253  1.0
  O  O15  1  0.560  0.943  0.247  1.0
  O  O16  1  0.196  0.943  0.883  1.0
  O  O17  1  0.560  0.313  0.617  1.0
  O  O18  1  0.000  0.500  0.500  1.0
  O  O19  1  0.500  0.500  0.000  1.0
[/CIF]
.