data_SnW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.25
_cell_length_b   7.25
_cell_length_c   5.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   154.96
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnW2
_chemical_formula_sum   'Sn2 W4'
_cell_volume   111.81
_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
  Sn  Sn0  1  0.57  0.02  0.77  1.0
  Sn  Sn1  1  0.57  0.98  0.26  1.0
  W  W2  1  0.57  0.69  0.77  1.0
  W  W3  1  0.57  0.65  0.77  1.0
  W  W4  1  0.57  0.35  0.26  1.0
  W  W5  1  0.57  0.31  0.26  1.0

data_SnW2
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.14
_cell_length_b   5.03
_cell_length_c   7.25
_cell_angle_alpha   90.0
_cell_angle_beta   102.52
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   SnW2
_chemical_formula_sum   'Sn2 W4'
_cell_volume   111.81
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Sn  Sn0  2  0.02  0.74  0.02  1.0
  W  W1  2  0.31  0.26  0.31  1.0
  W  W2  2  0.35  0.26  0.35  1.0

Sn Sn W W W W
W2Sn crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two W2Sn clusters. There are two inequivalent W sites. In the first W site, W(1) is bonded in a distorted linear geometry to one W(2) and one Sn(1) atom. The W(1)-W(2) bond length is 0.33 Å. The W(1)-Sn(1) bond length is 2.33 Å. In the second W site, W(2) is bonded in a single-bond geometry to one W(1) atom. Sn(1) is bonded in a distorted single-bond geometry to one W(1) atom.