data_TeAsPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.74
_cell_length_b   3.74
_cell_length_c   8.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TeAsPb2
_chemical_formula_sum   'Te1 As1 Pb2'
_cell_volume   114.55
_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
  Te  Te3  1  0.0  0.0  0.1  1.0
  As  As0  1  0.0  0.0  0.0  1.0
  Pb  Pb1  1  0.87  0.87  0.85  1.0
  Pb  Pb2  1  0.87  0.87  0.36  1.0

data_TeAsPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.28
_cell_length_b   5.28
_cell_length_c   8.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TeAsPb2
_chemical_formula_sum   'Te2 As2 Pb4'
_cell_volume   229.09
_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
  Te  Te0  2  0.0  0.0  0.1  1.0
  As  As1  2  0.0  0.0  0.0  1.0
  Pb  Pb2  2  0.37  0.5  0.36  1.0
  Pb  Pb3  2  0.37  0.5  0.85  1.0

Te As Pb Pb
Te As Pb Pb 0 1 o o o 0 3 - - o 1 2 - - - 
Pb2AsTe is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Pb2AsTe clusters. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a single-bond geometry to one As(1) atom. The Pb(1)-As(1) bond length is 1.42 Å. In the second Pb site, Pb(2) is bonded in a single-bond geometry to one Te(1) atom. The Pb(2)-Te(1) bond length is 2.20 Å. As(1) is bonded in a bent 150 degrees geometry to one Pb(1) and one Te(1) atom. The As(1)-Te(1) bond length is 0.85 Å. Te(1) is bonded in a distorted bent 150 degrees geometry to one Pb(2) and one As(1) atom.