data_CuOsPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   3.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuOsPb2
_chemical_formula_sum   'Cu1 Os1 Pb2'
_cell_volume   79.2
_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
  Cu  Cu0  1  0.0  0.0  0.0  1.0
  Os  Os1  1  0.45  0.45  0.0  1.0
  Pb  Pb2  1  0.45  0.0  0.65  1.0
  Pb  Pb3  1  0.0  0.45  0.65  1.0

data_CuOsPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.94
_cell_length_b   6.94
_cell_length_c   3.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CuOsPb2
_chemical_formula_sum   'Cu2 Os2 Pb4'
_cell_volume   158.4
_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
  Cu  Cu0  2  0.0  0.0  0.0  1.0
  Os  Os1  2  0.45  0.0  -0.0  1.0
  Pb  Pb2  4  0.23  0.23  0.65  1.0

Cu Os Pb Pb
OsCuPb2 crystallizes in the monoclinic Cm space group. Os(1) is bonded in a 2-coordinate geometry to two equivalent Pb(1) atoms. Both Os(1)-Pb(1) bond lengths are 2.50 Å. Cu(1) is bonded in a 6-coordinate geometry to six equivalent Pb(1) atoms. There are a spread of Cu(1)-Pb(1) bond distances ranging from 2.50-3.07 Å. Pb(1) is bonded in a 3-coordinate geometry to one Os(1) and three equivalent Cu(1) atoms.