The crystal structure described by W3AlO8 crystallizes in the triclinic P1 space group. There are three inequivalent W sites. In the first W site, W(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 WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra, edges with two equivalent W(2)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-26°. In the second W site, W(2) 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 W(1)O6 octahedra, corners with three equivalent Al(1)O4 tetrahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles are 26°. In the third W site, W(3) 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 W(1)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 are 23°. 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 W(1)O6 octahedra, corners with two equivalent W(3)O6 octahedra, and corners with three equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-60°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one W(2) and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one W(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one W(1), one W(2), one W(3), and one Al(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one W(1) and one W(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one W(3) and one Al(1) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one W(3) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one W(1), one W(2), and one W(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlW3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.170
_cell_length_b   5.611
_cell_length_c   5.876
_cell_angle_alpha   109.700
_cell_angle_beta   87.682
_cell_angle_gamma   104.093
_symmetry_Int_Tables_number   1
_cell_volume   155.479
_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
  Al  Al0  1  0.623  0.195  0.748  1.0
  W  W1  1  0.965  0.083  0.210  1.0
  W  W2  1  0.693  0.594  0.393  1.0
  W  W3  1  0.232  0.599  0.054  1.0
  O  O4  1  0.629  0.871  0.673  1.0
  O  O5  1  0.772  0.303  0.504  1.0
  O  O6  1  0.612  0.794  0.169  1.0
  O  O7  1  0.832  0.346  0.035  1.0
  O  O8  1  0.135  0.853  0.940  1.0
  O  O9  1  0.346  0.339  0.804  1.0
  O  O10  1  0.284  0.397  0.287  1.0
  O  O11  1  0.077  0.823  0.361  1.0
[/CIF]
.
The crystal structure described by W3AlO8 crystallizes in the triclinic P1 space group. There are three inequivalent W sites. In the first W site, W(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 WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, corners with two equivalent Al(1)O4 tetrahedra, edges with two equivalent W(2)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-26°. In the second W site, W(2) 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 W(1)O6 octahedra, corners with three equivalent Al(1)O4 tetrahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles are 26°. In the third W site, W(3) 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 W(1)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 are 23°. 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 W(1)O6 octahedra, corners with two equivalent W(3)O6 octahedra, and corners with three equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-60°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one W(2) and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one W(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one W(1), one W(2), one W(3), and one Al(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one W(1) and one W(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one W(3) and one Al(1) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one W(3) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one W(1), one W(2), and one W(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlW3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.170
_cell_length_b   5.611
_cell_length_c   5.876
_cell_angle_alpha   109.700
_cell_angle_beta   87.682
_cell_angle_gamma   104.093
_symmetry_Int_Tables_number   1
_cell_volume   155.479
_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
  Al  Al0  1  0.623  0.195  0.748  1.0
  W  W1  1  0.965  0.083  0.210  1.0
  W  W2  1  0.693  0.594  0.393  1.0
  W  W3  1  0.232  0.599  0.054  1.0
  O  O4  1  0.629  0.871  0.673  1.0
  O  O5  1  0.772  0.303  0.504  1.0
  O  O6  1  0.612  0.794  0.169  1.0
  O  O7  1  0.832  0.346  0.035  1.0
  O  O8  1  0.135  0.853  0.940  1.0
  O  O9  1  0.346  0.339  0.804  1.0
  O  O10  1  0.284  0.397  0.287  1.0
  O  O11  1  0.077  0.823  0.361  1.0
[/CIF]
.