data_NiOsPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   4.79
_cell_angle_alpha   121.61
_cell_angle_beta   121.61
_cell_angle_gamma   87.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NiOsPb2
_chemical_formula_sum   'Ni1 Os1 Pb2'
_cell_volume   75.61
_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
  Ni  Ni0  1  0.0  0.0  0.0  1.0
  Os  Os1  1  0.0  0.0  0.47  1.0
  Pb  Pb2  1  0.0  0.34  0.73  1.0
  Pb  Pb3  1  0.34  0.0  0.73  1.0

data_NiOsPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.61
_cell_length_b   6.61
_cell_length_c   4.79
_cell_angle_alpha   90.0
_cell_angle_beta   133.62
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NiOsPb2
_chemical_formula_sum   'Ni2 Os2 Pb4'
_cell_volume   151.23
_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
  Ni  Ni0  2  0.0  0.0  0.0  1.0
  Os  Os1  2  0.0  0.0  0.47  1.0
  Pb  Pb2  4  0.33  0.33  0.4  1.0

Ni Os Pb Pb
Ni Os Pb Pb 0 2 o o - 0 2 o - - 0 3 - o - 0 3 o o - 0 1 o o - 0 1 o o o 1 2 o o o 1 3 o o o 
OsNiPb2 crystallizes in the monoclinic Cm space group. Os(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ni(1) and two equivalent Pb(1) atoms. There is one shorter (2.23 Å) and one longer (2.56 Å) Os(1)-Ni(1) bond length. Both Os(1)-Pb(1) bond lengths are 1.44 Å. Ni(1) is bonded in a 6-coordinate geometry to two equivalent Os(1) and four equivalent Pb(1) atoms. There are two shorter (2.52 Å) and two longer (2.74 Å) Ni(1)-Pb(1) bond lengths. Pb(1) is bonded in a distorted single-bond geometry to one Os(1) and two equivalent Ni(1) atoms.