data_FeBiPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.71
_cell_length_b   4.71
_cell_length_c   4.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeBiPb2
_chemical_formula_sum   'Fe1 Bi1 Pb2'
_cell_volume   109.6
_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  Fe1  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.36  0.36  0.0  1.0
  Pb  Pb2  1  0.0  0.36  0.47  1.0
  Pb  Pb3  1  0.36  0.0  0.47  1.0

data_FeBiPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.66
_cell_length_b   6.66
_cell_length_c   4.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   FeBiPb2
_chemical_formula_sum   'Fe2 Bi2 Pb4'
_cell_volume   219.2
_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
  Fe  Fe0  2  0.0  0.0  0.0  1.0
  Bi  Bi1  2  0.36  0.0  0.0  1.0
  Pb  Pb2  4  0.18  0.18  0.47  1.0

Fe Bi Pb Pb
FePb2Bi crystallizes in the monoclinic Cm space group. Fe(1) is bonded in a 7-coordinate geometry to four equivalent Pb(1) and three equivalent Bi(1) atoms. There are two shorter (2.85 Å) and two longer (3.12 Å) Fe(1)-Pb(1) bond lengths. There is one shorter (2.37 Å) and two longer (3.47 Å) Fe(1)-Bi(1) bond lengths. Pb(1) is bonded in a 5-coordinate geometry to two equivalent Fe(1), one Pb(1), and two equivalent Bi(1) atoms. The Pb(1)-Pb(1) bond length is 2.37 Å. There is one shorter (2.85 Å) and one longer (3.12 Å) Pb(1)-Bi(1) bond length. Bi(1) is bonded in a 7-coordinate geometry to three equivalent Fe(1) and four equivalent Pb(1) atoms.