data_BeOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.46
_cell_length_b   10.46
_cell_length_c   10.46
_cell_angle_alpha   165.01
_cell_angle_beta   165.01
_cell_angle_gamma   21.27
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeOs2
_chemical_formula_sum   'Be2 Os4'
_cell_volume   76.59
_cell_formula_units_Z   2
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
  Be  Be0  1  0.0  0.36  0.14  1.0
  Be  Be1  1  0.0  0.0  0.0  1.0
  Os  Os2  1  0.36  0.0  0.63  1.0
  Os  Os3  1  0.0  0.0  0.79  1.0
  Os  Os4  1  0.36  0.0  0.65  1.0
  Os  Os5  1  0.0  0.0  0.77  1.0

data_BeOs2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.73
_cell_length_b   2.73
_cell_length_c   10.46
_cell_angle_alpha   97.5
_cell_angle_beta   97.5
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeOs2
_chemical_formula_sum   'Be2 Os4'
_cell_volume   76.59
_cell_formula_units_Z   2
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
  Be  Be0  1  0.0  0.0  0.0  1.0
  Be  Be1  1  0.22  0.36  0.22  1.0
  Os  Os2  1  0.21  0.0  0.21  1.0
  Os  Os3  1  0.23  0.0  0.23  1.0
  Os  Os4  1  0.35  0.0  0.71  1.0
  Os  Os5  1  0.37  0.0  0.74  1.0

Be Be Os Os Os Os
Be Be Os Os Os Os 0 5 o o - 0 3 o o - 0 1 o o o 1 1 + o + 1 1 o + + 1 5 o o - 1 3 o o - 2 4 o o o 3 5 o o o 
BeOsOs crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one os cl5 molecule and one BeOs cluster. In the BeOs cluster, there are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a distorted single-bond geometry to one Os(2) atom. The Be(1)-Os(2) bond length is 0.99 Å. In the second Be site, Be(2) is bonded in a distorted single-bond geometry to one Os(2) atom. The Be(2)-Os(2) bond length is 2.16 Å. There are two inequivalent Os sites. In the first Os site, Os(2) is bonded in a 2-coordinate geometry to one Be(1), one Be(2), and one Os(4) atom. The Os(2)-Os(4) bond length is 0.27 Å. In the second Os site, Os(4) is bonded in a single-bond geometry to one Os(2) atom.