data_Sn2PbW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.87
_cell_length_b   10.87
_cell_length_c   10.87
_cell_angle_alpha   17.1
_cell_angle_beta   17.1
_cell_angle_gamma   17.1
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn2PbW
_chemical_formula_sum   'Sn2 Pb1 W1'
_cell_volume   96.76
_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
  Sn  Sn1  1  0.0  0.0  0.2  1.0
  Sn  Sn2  1  0.0  0.0  0.44  1.0
  Pb  Pb0  1  0.0  0.0  0.62  1.0
  W  W3  1  0.0  0.0  0.92  1.0

data_Sn2PbW
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.6
_cell_length_b   3.23
_cell_length_c   10.87
_cell_angle_alpha   90.0
_cell_angle_beta   99.88
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sn2PbW
_chemical_formula_sum   'Sn4 Pb2 W2'
_cell_volume   193.53
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  0.0  0.0  0.56  1.0
  Sn  Sn1  2  0.0  0.0  0.8  1.0
  Pb  Pb2  2  0.0  0.0  0.38  1.0
  W  W3  2  0.0  0.0  0.08  1.0

Sn Sn Pb W
WPbSn2 crystallizes in the monoclinic Cm space group. W(1) is bonded in a 8-coordinate geometry to six equivalent W(1), one Pb(1), and one Sn(1) atom. All W(1)-W(1) bond lengths are 3.23 Å. The W(1)-Pb(1) bond length is 3.29 Å. The W(1)-Sn(1) bond length is 3.04 Å. Pb(1) is bonded in a single-bond geometry to one W(1) and one Sn(2) atom. The Pb(1)-Sn(2) bond length is 1.88 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one W(1), one Sn(2), and six equivalent Sn(1) atoms. The Sn(1)-Sn(2) bond length is 2.66 Å. All Sn(1)-Sn(1) bond lengths are 3.23 Å. In the second Sn site, Sn(2) is bonded in a single-bond geometry to one Pb(1) and one Sn(1) atom.