data_FeTePb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.4
_cell_length_b   4.4
_cell_length_c   4.48
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeTePb
_chemical_formula_sum   'Fe1 Te1 Pb1'
_cell_volume   75.11
_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
  Fe  Fe0  1  0.0  0.0  0.92  1.0
  Te  Te2  1  0.0  0.54  0.67  1.0
  Pb  Pb1  1  0.2  0.27  0.36  1.0

data_FeTePb
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.4
_cell_length_b   4.4
_cell_length_c   4.48
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeTePb
_chemical_formula_sum   'Fe1 Te1 Pb1'
_cell_volume   75.11
_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
  Fe  Fe0  1  0.0  0.0  0.92  1.0
  Te  Te1  1  -0.0  0.54  0.67  1.0
  Pb  Pb2  1  0.2  0.27  0.36  1.0

Fe Te Pb
Fe Te Pb 0 1 o o o 0 1 o - o 0 2 o o o 0 2 o o + 1 2 o o o 
FePbTe crystallizes in the triclinic P1 space group. Fe(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Pb(1) and two equivalent Te(1) atoms. There is one shorter (2.24 Å) and one longer (2.73 Å) Fe(1)-Pb(1) bond length. There is one shorter (2.31 Å) and one longer (2.64 Å) Fe(1)-Te(1) bond length. Pb(1) is bonded in a 5-coordinate geometry to two equivalent Fe(1) and three equivalent Te(1) atoms. There are a spread of Pb(1)-Te(1) bond distances ranging from 2.27-3.39 Å. Te(1) is bonded in a 5-coordinate geometry to two equivalent Fe(1) and three equivalent Pb(1) atoms.