data_AsPb2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.29
_cell_length_b   5.29
_cell_length_c   6.2
_cell_angle_alpha   104.64
_cell_angle_beta   104.64
_cell_angle_gamma   36.35
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AsPb2W
_chemical_formula_sum   'As1 Pb2 W1'
_cell_volume   98.98
_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
  As  As0  1  0.97  0.0  0.2  1.0
  Pb  Pb1  1  0.38  0.0  0.64  1.0
  Pb  Pb2  1  0.25  0.0  0.91  1.0
  W  W3  1  0.4  0.0  0.18  1.0

data_AsPb2W
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.3
_cell_length_b   5.29
_cell_length_c   6.2
_cell_angle_alpha   104.64
_cell_angle_beta   90.0
_cell_angle_gamma   108.18
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AsPb2W
_chemical_formula_sum   'As1 Pb2 W1'
_cell_volume   98.98
_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
  As  As0  1  0.0  0.03  0.8  1.0
  Pb  Pb1  1  0.0  0.62  0.36  1.0
  Pb  Pb2  1  0.0  0.75  0.09  1.0
  W  W3  1  0.0  0.6  0.82  1.0

As Pb Pb W
WPb2As crystallizes in the triclinic P1 space group. W(1) is bonded in a 2-coordinate geometry to one Pb(1), one Pb(2), and two equivalent As(1) atoms. The W(1)-Pb(1) bond length is 2.92 Å. The W(1)-Pb(2) bond length is 1.67 Å. There is one shorter (2.31 Å) and one longer (2.98 Å) W(1)-As(1) bond length. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one W(1), one Pb(2), two equivalent Pb(1), and one As(1) atom. The Pb(1)-Pb(2) bond length is 1.93 Å. Both Pb(1)-Pb(1) bond lengths are 3.30 Å. The Pb(1)-As(1) bond length is 3.04 Å. In the second Pb site, Pb(2) is bonded in a 3-coordinate geometry to one W(1), one Pb(1), and one As(1) atom. The Pb(2)-As(1) bond length is 2.57 Å. As(1) is bonded in a 4-coordinate geometry to two equivalent W(1), one Pb(1), and one Pb(2) atom.