The structure described by TaAl(WO4)2 crystallizes in the triclinic P1 space group. Ta(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form TaO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-22°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with three equivalent Al(1)O4 tetrahedra, edges with two equivalent Ta(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra, edges with two equivalent Ta(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles are 15°. Al(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form AlO4 tetrahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, and corners with three equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-66°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one W(1) and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1), one W(1), and one Al(1) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Ta(1), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Ta(1), one W(1), one W(2), and one Al(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Ta(1) and one W(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one W(2) and one Al(1) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Ta(1), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ta(1), one W(1), and one W(2) atom. is represented by the CIF file [CIF]
data_TaAl(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.224
_cell_length_b   5.399
_cell_length_c   5.964
_cell_angle_alpha   108.697
_cell_angle_beta   87.332
_cell_angle_gamma   103.643
_symmetry_Int_Tables_number   1
_cell_volume   154.755
_cell_formula_units_Z   1
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  0.958  0.074  0.212  1.0
  Al  Al1  1  0.640  0.202  0.751  1.0
  W  W2  1  0.679  0.593  0.391  1.0
  W  W3  1  0.230  0.590  0.045  1.0
  O  O4  1  0.613  0.856  0.675  1.0
  O  O5  1  0.816  0.316  0.521  1.0
  O  O6  1  0.607  0.831  0.172  1.0
  O  O7  1  0.829  0.322  0.044  1.0
  O  O8  1  0.113  0.869  0.945  1.0
  O  O9  1  0.366  0.338  0.788  1.0
  O  O10  1  0.297  0.382  0.273  1.0
  O  O11  1  0.053  0.824  0.361  1.0
[/CIF]
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The structure described by TaAl(WO4)2 crystallizes in the triclinic P1 space group. Ta(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form TaO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-22°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with three equivalent Al(1)O4 tetrahedra, edges with two equivalent Ta(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra, edges with two equivalent Ta(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles are 15°. Al(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form AlO4 tetrahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, and corners with three equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-66°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one W(1) and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1), one W(1), and one Al(1) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Ta(1), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Ta(1), one W(1), one W(2), and one Al(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Ta(1) and one W(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one W(2) and one Al(1) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Ta(1), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ta(1), one W(1), and one W(2) atom. is represented by the CIF file [CIF]
data_TaAl(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.224
_cell_length_b   5.399
_cell_length_c   5.964
_cell_angle_alpha   108.697
_cell_angle_beta   87.332
_cell_angle_gamma   103.643
_symmetry_Int_Tables_number   1
_cell_volume   154.755
_cell_formula_units_Z   1
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  0.958  0.074  0.212  1.0
  Al  Al1  1  0.640  0.202  0.751  1.0
  W  W2  1  0.679  0.593  0.391  1.0
  W  W3  1  0.230  0.590  0.045  1.0
  O  O4  1  0.613  0.856  0.675  1.0
  O  O5  1  0.816  0.316  0.521  1.0
  O  O6  1  0.607  0.831  0.172  1.0
  O  O7  1  0.829  0.322  0.044  1.0
  O  O8  1  0.113  0.869  0.945  1.0
  O  O9  1  0.366  0.338  0.788  1.0
  O  O10  1  0.297  0.382  0.273  1.0
  O  O11  1  0.053  0.824  0.361  1.0
[/CIF]
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