data_P2OsBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.41
_cell_length_b   4.41
_cell_length_c   4.41
_cell_angle_alpha   110.84
_cell_angle_beta   110.84
_cell_angle_gamma   106.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   P2OsBr
_chemical_formula_sum   'P2 Os1 Br1'
_cell_volume   65.69
_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
  P  P2  1  0.5  0.0  0.0  1.0
  P  P3  1  0.0  0.5  0.0  1.0
  Os  Os1  1  0.0  0.0  0.63  1.0
  Br  Br0  1  0.0  0.0  0.0  1.0

data_P2OsBr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.25
_cell_length_b   7.07
_cell_length_c   4.41
_cell_angle_alpha   90.0
_cell_angle_beta   126.62
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   P2OsBr
_chemical_formula_sum   'P4 Os2 Br2'
_cell_volume   131.38
_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
  P  P0  4  0.25  0.25  0.0  1.0
  Os  Os1  2  0.0  0.0  0.37  1.0
  Br  Br2  2  0.0  0.0  0.0  1.0

P P Os Br
P P Os Br 0 1 o - o 0 1 + o o 0 2 o o - 0 3 o o o 0 3 + o o 1 3 o + o 1 3 o o o 1 2 o o - 2 3 o o + 
OsP2Br crystallizes in the monoclinic Cm space group. Os(1) is bonded in a single-bond geometry to two equivalent Br(1) atoms. There is one shorter (1.64 Å) and one longer (2.76 Å) Os(1)-Br(1) bond length. P(1) is bonded in a 2-coordinate geometry to two equivalent Br(1) atoms. Both P(1)-Br(1) bond lengths are 2.20 Å. Br(1) is bonded in a 6-coordinate geometry to two equivalent Os(1) and four equivalent P(1) atoms.