data_BeIrOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.71
_cell_length_b   4.71
_cell_length_c   4.71
_cell_angle_alpha   133.79
_cell_angle_beta   133.79
_cell_angle_gamma   67.41
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeIrOs2
_chemical_formula_sum   'Be1 Ir1 Os2'
_cell_volume   53.51
_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
  Be  Be0  1  0.0  0.0  0.0  1.0
  Ir  Ir1  1  0.0  0.0  0.92  1.0
  Os  Os2  1  0.0  0.85  0.96  1.0
  Os  Os3  1  0.85  0.0  0.96  1.0

data_BeIrOs2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   4.71
_cell_angle_alpha   90.0
_cell_angle_beta   123.71
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BeIrOs2
_chemical_formula_sum   'Be2 Ir2 Os4'
_cell_volume   107.03
_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
  Be  Be0  2  0.0  0.0  0.0  1.0
  Os  Os1  4  0.08  0.08  0.11  1.0
  Ir  Ir2  2  0.0  0.0  0.92  1.0

Be Ir Os Os
BeOs2Ir is Ammonia-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeOs2Ir clusters. Be(1) is bonded in a distorted trigonal planar geometry to two equivalent Os(1) and one Ir(1) atom. Both Be(1)-Os(1) bond lengths are 0.60 Å. The Be(1)-Ir(1) bond length is 0.39 Å. Os(1) is bonded in a single-bond geometry to one Be(1) atom. Ir(1) is bonded in a single-bond geometry to one Be(1) atom.