data_AlW2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.87
_cell_length_b   4.39
_cell_length_c   5.3
_cell_angle_alpha   90.0
_cell_angle_beta   91.36
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlW2Se
_chemical_formula_sum   'Al1 W2 Se1'
_cell_volume   66.82
_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  0.0  0.0  0.0  1.0
  W  W2  1  0.96  0.2  0.07  1.0
  W  W3  1  0.79  0.2  0.23  1.0
  Se  Se1  1  0.37  0.0  0.65  1.0

data_AlW2Se
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.87
_cell_length_b   4.39
_cell_length_c   5.3
_cell_angle_alpha   90.0
_cell_angle_beta   91.36
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlW2Se
_chemical_formula_sum   'Al1 W2 Se1'
_cell_volume   66.82
_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  0.0  0.0  0.0  1.0
  W  W1  1  0.79  0.2  0.23  1.0
  W  W2  1  0.96  0.2  0.07  1.0
  Se  Se3  1  0.37  0.0  0.65  1.0

Al W W Se
W2AlSe crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one W2AlSe cluster. There are two inequivalent W sites. In the first W site, W(1) is bonded in a distorted single-bond geometry to one W(2) and one Al(1) atom. The W(1)-W(2) bond length is 0.98 Å. The W(1)-Al(1) bond length is 0.95 Å. In the second W site, W(2) is bonded in a distorted single-bond geometry to one W(1) atom. Al(1) is bonded in a single-bond geometry to one W(1) and one Se(1) atom. The Al(1)-Se(1) bond length is 2.17 Å. Se(1) is bonded in a 1-coordinate geometry to one Al(1) atom.