data_FeSi2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.12
_cell_length_b   3.12
_cell_length_c   7.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   102.91
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeSi2Pb
_chemical_formula_sum   'Fe1 Si2 Pb1'
_cell_volume   71.05
_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  0.28  1.0
  Si  Si2  1  0.0  0.0  0.89  1.0
  Si  Si3  1  0.94  0.0  0.41  1.0
  Pb  Pb1  1  0.94  0.0  0.14  1.0

data_FeSi2Pb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.12
_cell_length_b   3.12
_cell_length_c   7.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   102.91
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeSi2Pb
_chemical_formula_sum   'Fe1 Si2 Pb1'
_cell_volume   71.05
_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  0.28  1.0
  Si  Si1  1  0.0  0.0  0.89  1.0
  Si  Si2  1  0.94  0.0  0.41  1.0
  Pb  Pb3  1  0.94  0.0  0.14  1.0

Fe Si Si Pb
Fe Si Si Pb 0 3 - o o 0 2 - o o 1 3 - o + 
FePbSi2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one FePbSi2 cluster. Fe(1) is bonded in a distorted bent 150 degrees geometry to one Pb(1) and one Si(2) atom. The Fe(1)-Pb(1) bond length is 1.12 Å. The Fe(1)-Si(2) bond length is 1.00 Å. Pb(1) is bonded in a distorted linear geometry to one Fe(1) and one Si(1) atom. The Pb(1)-Si(1) bond length is 1.82 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a single-bond geometry to one Pb(1) atom. In the second Si site, Si(2) is bonded in a single-bond geometry to one Fe(1) atom.