data_SnW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.31
_cell_length_b   9.31
_cell_length_c   9.31
_cell_angle_alpha   162.71
_cell_angle_beta   150.34
_cell_angle_gamma   34.54
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnW2
_chemical_formula_sum   'Sn2 W4'
_cell_volume   118.51
_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  0.4  0.19  0.38  1.0
  Sn  Sn1  1  0.0  0.19  0.51  1.0
  W  W2  1  0.0  0.57  0.2  1.0
  W  W3  1  0.4  0.81  0.69  1.0
  W  W4  1  0.0  0.57  0.56  1.0
  W  W5  1  0.4  0.81  0.33  1.0

data_SnW2
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.8
_cell_length_b   4.76
_cell_length_c   9.31
_cell_angle_alpha   104.83
_cell_angle_beta   98.65
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   SnW2
_chemical_formula_sum   'Sn2 W4'
_cell_volume   118.51
_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  0.24  0.44  0.24  1.0
  W  W1  2  0.18  0.77  0.57  1.0
  W  W2  2  0.45  0.87  0.07  1.0

Sn Sn W W W W
W2Sn crystallizes in the triclinic P-1 space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 3-coordinate geometry to one W(1) and six equivalent Sn(1) atoms. The W(1)-W(1) bond length is 2.07 Å. There are a spread of W(1)-Sn(1) bond distances ranging from 2.84-3.47 Å. In the second W site, W(2) is bonded in a 2-coordinate geometry to three equivalent Sn(1) atoms. There are a spread of W(2)-Sn(1) bond distances ranging from 2.63-3.10 Å. Sn(1) is bonded in a 11-coordinate geometry to three equivalent W(2), six equivalent W(1), and two equivalent Sn(1) atoms. Both Sn(1)-Sn(1) bond lengths are 2.80 Å.