data_Mg2GeOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.46
_cell_length_b   3.46
_cell_length_c   5.5
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg2GeOs
_chemical_formula_sum   'Mg2 Ge1 Os1'
_cell_volume   65.74
_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
  Mg  Mg1  1  0.73  0.73  0.45  1.0
  Mg  Mg2  1  0.73  0.73  0.05  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0
  Os  Os3  1  0.0  0.0  0.75  1.0

data_Mg2GeOs
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.89
_cell_length_b   4.89
_cell_length_c   5.5
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Mg2GeOs
_chemical_formula_sum   'Mg4 Ge2 Os2'
_cell_volume   131.47
_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
  Mg  Mg0  2  0.23  0.5  0.05  1.0
  Mg  Mg1  2  0.23  0.5  0.45  1.0
  Ge  Ge2  2  0.0  0.0  0.0  1.0
  Os  Os3  2  0.0  0.0  0.75  1.0

Mg Mg Ge Os
Mg Mg Ge Os 0 1 o o o 0 3 + + o 1 2 + + o 2 3 o o - 
Mg2OsGe is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Mg2OsGe clusters. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted single-bond geometry to one Os(1) atom. The Mg(1)-Os(1) bond length is 2.10 Å. In the second Mg site, Mg(2) is bonded in a single-bond geometry to one Ge(1) atom. The Mg(2)-Ge(1) bond length is 1.35 Å. Os(1) is bonded in a distorted bent 150 degrees geometry to one Mg(1) and one Ge(1) atom. The Os(1)-Ge(1) bond length is 1.38 Å. Ge(1) is bonded in a distorted water-like geometry to one Mg(2) and one Os(1) atom.