data_Be2CuOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.73
_cell_length_b   2.95
_cell_length_c   5.27
_cell_angle_alpha   90.0
_cell_angle_beta   93.48
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2CuOs
_chemical_formula_sum   'Be2 Cu1 Os1'
_cell_volume   42.26
_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  0.17  0.47  0.88  1.0
  Be  Be1  1  0.24  0.47  0.38  1.0
  Cu  Cu2  1  0.0  0.0  0.0  1.0
  Os  Os3  1  0.84  0.0  0.63  1.0

data_Be2CuOs
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.73
_cell_length_b   2.95
_cell_length_c   5.27
_cell_angle_alpha   90.0
_cell_angle_beta   93.48
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2CuOs
_chemical_formula_sum   'Be2 Cu1 Os1'
_cell_volume   42.26
_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  0.17  0.47  0.88  1.0
  Be  Be1  1  0.24  0.47  0.38  1.0
  Cu  Cu2  1  0.0  0.0  0.0  1.0
  Os  Os3  1  0.84  0.0  0.63  1.0

Be Be Cu Os
Be2OsCu crystallizes in the triclinic P1 space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a 4-coordinate geometry to two equivalent Os(1) and two equivalent Cu(1) atoms. There is one shorter (2.09 Å) and one longer (2.20 Å) Be(1)-Os(1) bond length. There is one shorter (1.60 Å) and one longer (1.74 Å) Be(1)-Cu(1) bond length. In the second Be site, Be(2) is bonded in a 6-coordinate geometry to four equivalent Os(1) and two equivalent Cu(1) atoms. There are a spread of Be(2)-Os(1) bond distances ranging from 2.25-2.57 Å. There is one shorter (2.49 Å) and one longer (2.59 Å) Be(2)-Cu(1) bond length. Os(1) is bonded in a 7-coordinate geometry to two equivalent Be(1), four equivalent Be(2), and one Cu(1) atom. The Os(1)-Cu(1) bond length is 1.97 Å. Cu(1) is bonded in a 2-coordinate geometry to two equivalent Be(1), two equivalent Be(2), and one Os(1) atom.