data_CoSnPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.31
_cell_length_b   3.31
_cell_length_c   8.59
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.67
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoSnPb2
_chemical_formula_sum   'Co1 Sn1 Pb2'
_cell_volume   94.25
_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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.3  1.0
  Pb  Pb1  1  0.31  0.0  0.65  1.0
  Pb  Pb2  1  0.31  0.0  0.94  1.0

data_CoSnPb2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.31
_cell_length_b   3.31
_cell_length_c   8.59
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   CoSnPb2
_chemical_formula_sum   'Co1 Sn1 Pb2'
_cell_volume   94.29
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Sn  Sn1  1  0.0  0.0  0.3  1.0
  Pb  Pb2  1  0.31  0.0  0.65  1.0
  Pb  Pb3  1  0.31  0.0  0.94  1.0

Co Sn Pb Pb
CoPb2Sn crystallizes in the monoclinic Pm space group. Co(1) is bonded in a distorted single-bond geometry to one Pb(2) and one Sn(1) atom. The Co(1)-Pb(2) bond length is 1.16 Å. The Co(1)-Sn(1) bond length is 2.54 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one Pb(2), four equivalent Pb(1), and one Sn(1) atom to form a mixture of distorted edge and corner-sharing PbSnPb5 octahedra. The corner-sharing octahedra are not tilted. The Pb(1)-Pb(2) bond length is 2.42 Å. All Pb(1)-Pb(1) bond lengths are 3.31 Å. The Pb(1)-Sn(1) bond length is 3.25 Å. In the second Pb site, Pb(2) is bonded in a distorted single-bond geometry to one Co(1) and one Pb(1) atom. Sn(1) is bonded in a 2-coordinate geometry to one Co(1) and one Pb(1) atom.