data_Cu2Os
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.07
_cell_length_b   7.07
_cell_length_c   4.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   158.54
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cu2Os
_chemical_formula_sum   'Cu4 Os2'
_cell_volume   77.52
_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
  Cu  Cu0  1  0.32  0.54  0.18  1.0
  Cu  Cu1  1  0.32  0.8  0.18  1.0
  Cu  Cu2  1  0.32  0.2  0.06  1.0
  Cu  Cu3  1  0.32  0.46  0.06  1.0
  Os  Os4  1  0.32  0.06  0.18  1.0
  Os  Os5  1  0.32  0.94  0.06  1.0

data_Cu2Os
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.63
_cell_length_b   4.24
_cell_length_c   7.07
_cell_angle_alpha   90.0
_cell_angle_beta   100.73
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Cu2Os
_chemical_formula_sum   'Cu4 Os2'
_cell_volume   77.52
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Cu  Cu0  2  0.2  0.56  0.7  1.0
  Cu  Cu1  2  0.46  0.56  0.96  1.0
  Os  Os2  2  0.06  0.44  0.56  1.0

Cu Cu Cu Cu Os Os
Cu Cu Cu Cu Os Os 0 3 o o o 1 5 o o o 2 4 o o o 4 5 o - o 
CuOsCu crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one Cu cluster and one CuOs cluster. In the Cu cluster, Cu(1) is bonded in a distorted single-bond geometry to one Cu(1) atom. The Cu(1)-Cu(1) bond length is 0.78 Å. In the CuOs cluster, Os(1) is bonded in a bent 120 degrees geometry to one Os(1) and one Cu(2) atom. The Os(1)-Os(1) bond length is 1.00 Å. The Os(1)-Cu(2) bond length is 1.11 Å. Cu(2) is bonded in a single-bond geometry to one Os(1) atom.