data_BiAsOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.69
_cell_length_b   8.69
_cell_length_c   8.69
_cell_angle_alpha   20.51
_cell_angle_beta   20.51
_cell_angle_gamma   20.51
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiAsOs2
_chemical_formula_sum   'Bi1 As1 Os2'
_cell_volume   70.53
_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
  Bi  Bi1  1  0.0  0.0  0.76  1.0
  As  As0  1  0.0  0.0  0.0  1.0
  Os  Os2  1  0.0  0.0  0.7  1.0
  Os  Os3  1  0.0  0.0  0.82  1.0

data_BiAsOs2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.36
_cell_length_b   3.09
_cell_length_c   8.69
_cell_angle_alpha   90.0
_cell_angle_beta   101.86
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BiAsOs2
_chemical_formula_sum   'Bi2 As2 Os4'
_cell_volume   141.06
_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
  Bi  Bi0  2  0.0  0.0  0.24  1.0
  As  As1  2  0.0  0.0  0.0  1.0
  Os  Os2  2  0.0  0.0  0.18  1.0
  Os  Os3  2  0.0  0.0  0.3  1.0

Bi As Os Os
Os2BiAs is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Os2BiAs clusters. There are two inequivalent Os sites. In the first Os site, Os(1) is bonded in a single-bond geometry to one Bi(1) atom. The Os(1)-Bi(1) bond length is 0.52 Å. In the second Os site, Os(2) is bonded in a distorted single-bond geometry to one Bi(1) and one As(1) atom. The Os(2)-Bi(1) bond length is 0.52 Å. The Os(2)-As(1) bond length is 1.59 Å. Bi(1) is bonded in a linear geometry to one Os(1) and one Os(2) atom. As(1) is bonded in a single-bond geometry to one Os(2) atom.