data_FeCuSnPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   4.9
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeCuSnPb
_chemical_formula_sum   'Fe1 Cu1 Sn1 Pb1'
_cell_volume   83.21
_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
  Cu  Cu0  1  0.73  0.73  0.73  1.0
  Sn  Sn3  1  0.47  0.47  0.47  1.0
  Pb  Pb2  1  0.2  0.2  0.2  1.0

data_FeCuSnPb
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   12.0
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   FeCuSnPb
_chemical_formula_sum   'Fe3 Cu3 Sn3 Pb3'
_cell_volume   249.62
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.0  1.0
  Cu  Cu1  3  0.0  0.0  0.27  1.0
  Sn  Sn2  3  0.0  0.0  0.53  1.0
  Pb  Pb3  3  0.0  0.0  0.8  1.0

Fe Cu Sn Pb
Fe Cu Sn Pb 0 3 o - o 0 3 - o o 0 3 o o - 0 3 o o o 0 1 - - - 0 1 - - o 0 1 - o - 0 1 o - - 0 2 - o o 0 2 o - o 0 2 o o - 1 2 o o o 1 2 o o + 1 2 o + o 1 2 + o o 1 3 o + + 1 3 + o + 1 3 + + o 2 3 o o o 2 3 o o + 2 3 o + o 2 3 + o o 
FeCuPbSn crystallizes in the trigonal R3m space group. Fe(1) is bonded in a distorted single-bond geometry to four equivalent Cu(1), one Pb(1), and three equivalent Sn(1) atoms. There are three shorter (2.94 Å) and one longer (3.21 Å) Fe(1)-Cu(1) bond length. The Fe(1)-Pb(1) bond length is 2.37 Å. All Fe(1)-Sn(1) bond lengths are 3.24 Å. Cu(1) is bonded in a distorted q6 geometry to four equivalent Fe(1), three equivalent Pb(1), and four equivalent Sn(1) atoms. All Cu(1)-Pb(1) bond lengths are 3.24 Å. There are three shorter (2.94 Å) and one longer (3.21 Å) Cu(1)-Sn(1) bond length. Pb(1) is bonded in a distorted single-bond geometry to one Fe(1), three equivalent Cu(1), and four equivalent Sn(1) atoms. There are three shorter (2.94 Å) and one longer (3.21 Å) Pb(1)-Sn(1) bond length. Sn(1) is bonded in a 11-coordinate geometry to three equivalent Fe(1), four equivalent Cu(1), and four equivalent Pb(1) atoms.