data_Fe2SiPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   5.0
_cell_angle_alpha   134.45
_cell_angle_beta   134.45
_cell_angle_gamma   66.39
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe2SiPb
_chemical_formula_sum   'Fe2 Si1 Pb1'
_cell_volume   62.6
_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  0.93  0.0  0.09  1.0
  Fe  Fe1  1  0.0  0.0  0.18  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Pb  Pb2  1  0.0  0.93  0.09  1.0

data_Fe2SiPb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.87
_cell_length_b   3.87
_cell_length_c   5.0
_cell_angle_alpha   112.78
_cell_angle_beta   112.78
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe2SiPb
_chemical_formula_sum   'Fe2 Si1 Pb1'
_cell_volume   62.6
_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  0.82  0.0  0.82  1.0
  Fe  Fe1  1  0.91  0.0  0.84  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.84  0.93  0.84  1.0

Fe Fe Si Pb
Fe2PbSi is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Fe2PbSi cluster. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a distorted single-bond geometry to one Fe(2), one Pb(1), and one Si(1) atom. The Fe(1)-Fe(2) bond length is 0.32 Å. The Fe(1)-Pb(1) bond length is 0.36 Å. The Fe(1)-Si(1) bond length is 0.72 Å. In the second Fe site, Fe(2) is bonded in a distorted single-bond geometry to one Fe(1) and one Pb(1) atom. The Fe(2)-Pb(1) bond length is 0.32 Å. Pb(1) is bonded in a 3-coordinate geometry to one Fe(1), one Fe(2), and one Si(1) atom. The Pb(1)-Si(1) bond length is 0.72 Å. Si(1) is bonded in a 2-coordinate geometry to one Fe(1) and one Pb(1) atom.