data_NaMgOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.1
_cell_length_b   7.9
_cell_length_c   2.78
_cell_angle_alpha   84.09
_cell_angle_beta   75.96
_cell_angle_gamma   19.95
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMgOs
_chemical_formula_sum   'Na1 Mg1 Os1'
_cell_volume   54.45
_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
  Na  Na1  1  0.5  0.34  0.03  1.0
  Mg  Mg0  1  0.5  0.34  0.25  1.0
  Os  Os2  1  0.5  0.34  0.23  1.0

data_NaMgOs
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.01
_cell_length_b   15.51
_cell_length_c   2.78
_cell_angle_alpha   90.0
_cell_angle_beta   122.75
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaMgOs
_chemical_formula_sum   'Na2 Mg2 Os2'
_cell_volume   108.9
_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
  Na  Na0  2  0.0  0.5  0.53  1.0
  Mg  Mg1  2  0.0  0.5  0.76  1.0
  Os  Os2  2  0.0  0.5  0.73  1.0

Na Mg Os
Na Mg Os 0 2 o o o 0 1 o o o 1 2 o o o 
NaMgOs crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two NaMgOs clusters. Na(1) is bonded in a single-bond geometry to one Os(1) atom. The Na(1)-Os(1) bond length is 0.57 Å. Mg(1) is bonded in a single-bond geometry to one Os(1) atom. The Mg(1)-Os(1) bond length is 0.06 Å. Os(1) is bonded in a linear geometry to one Na(1) and one Mg(1) atom.