data_YOsPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.41
_cell_length_b   3.41
_cell_length_c   8.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YOsPb2
_chemical_formula_sum   'Y1 Os1 Pb2'
_cell_volume   102.9
_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
  Y  Y3  1  0.0  0.0  0.97  1.0
  Os  Os0  1  0.7  0.7  0.59  1.0
  Pb  Pb1  1  0.0  0.0  0.32  1.0
  Pb  Pb2  1  0.7  0.7  0.29  1.0

data_YOsPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.82
_cell_length_b   4.82
_cell_length_c   8.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   YOsPb2
_chemical_formula_sum   'Y2 Os2 Pb4'
_cell_volume   205.79
_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
  Y  Y0  2  0.0  0.0  0.97  1.0
  Os  Os1  2  0.2  0.5  0.59  1.0
  Pb  Pb2  2  0.0  0.0  0.32  1.0
  Pb  Pb3  2  0.2  0.5  0.29  1.0

Y Os Pb Pb
YOsPb2 crystallizes in the monoclinic Cm space group. Y(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), one Os(1), one Pb(1), and three equivalent Pb(2) atoms. All Y(1)-Y(1) bond lengths are 3.41 Å. The Y(1)-Os(1) bond length is 3.69 Å. The Y(1)-Pb(1) bond length is 3.15 Å. There is one shorter (3.18 Å) and two longer (3.85 Å) Y(1)-Pb(2) bond lengths. Os(1) is bonded in a 3-coordinate geometry to one Y(1), one Pb(1), and one Pb(2) atom. The Os(1)-Pb(1) bond length is 2.72 Å. The Os(1)-Pb(2) bond length is 2.63 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted single-bond geometry to one Y(1), one Os(1), and one Pb(2) atom. The Pb(1)-Pb(2) bond length is 1.46 Å. In the second Pb site, Pb(2) is bonded in a distorted single-bond geometry to three equivalent Y(1), one Os(1), and one Pb(1) atom.