data_La2TePb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.8
_cell_length_b   5.8
_cell_length_c   3.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2TePb
_chemical_formula_sum   'La2 Te1 Pb1'
_cell_volume   127.09
_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
  La  La0  1  0.0  0.9  0.89  1.0
  La  La1  1  0.9  0.0  0.89  1.0
  Te  Te3  1  0.0  0.0  0.0  1.0
  Pb  Pb2  1  0.9  0.9  0.0  1.0

data_La2TePb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   8.21
_cell_length_b   8.21
_cell_length_c   3.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   La2TePb
_chemical_formula_sum   'La4 Te2 Pb2'
_cell_volume   254.19
_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
  La  La0  4  0.45  0.45  0.89  1.0
  Te  Te1  2  0.0  0.0  0.0  1.0
  Pb  Pb2  2  0.4  0.5  0.0  1.0

La La Te Pb
La La Te Pb 0 1 - + o 0 3 - o + 0 2 o + + 1 3 o - + 1 2 + o + 2 3 - - o 
La2PbTe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two La2PbTe clusters. La(1) is bonded in a 2-coordinate geometry to one Pb(1) and one Te(1) atom. The La(1)-Pb(1) bond length is 0.71 Å. The La(1)-Te(1) bond length is 0.71 Å. Pb(1) is bonded in a 3-coordinate geometry to two equivalent La(1) and one Te(1) atom. The Pb(1)-Te(1) bond length is 0.81 Å. Te(1) is bonded in a 3-coordinate geometry to two equivalent La(1) and one Pb(1) atom.