data_Na2SbOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.87
_cell_length_b   2.87
_cell_length_c   10.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SbOs
_chemical_formula_sum   'Na2 Sb1 Os1'
_cell_volume   84.31
_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  Na0  1  0.0  0.0  0.77  1.0
  Na  Na1  1  0.0  0.0  0.44  1.0
  Sb  Sb3  1  0.0  0.0  0.0  1.0
  Os  Os2  1  0.0  0.0  0.11  1.0

data_Na2SbOs
_symmetry_space_group_name_H-M   P4mm
_cell_length_a   2.87
_cell_length_b   2.87
_cell_length_c   10.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   99
_chemical_formula_structural   Na2SbOs
_chemical_formula_sum   'Na2 Sb1 Os1'
_cell_volume   84.34
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x, z'
  3  '-x, -y, z'
  4  'y, -x, z'
  5  '-x, y, z'
  6  'y, x, z'
  7  'x, -y, z'
  8  '-y, -x, 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  1  0.0  0.0  0.44  1.0
  Na  Na1  1  0.0  0.0  0.77  1.0
  Sb  Sb2  1  0.0  0.0  0.0  1.0
  Os  Os3  1  0.0  0.0  0.11  1.0

Na Na Sb Os
Na2OsSb crystallizes in the monoclinic Pm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a single-bond geometry to one Na(2) and one Sb(1) atom. The Na(1)-Na(2) bond length is 3.37 Å. The Na(1)-Sb(1) bond length is 2.32 Å. In the second Na site, Na(2) is bonded to one Na(1), four equivalent Na(2), and one Os(1) atom to form a mixture of distorted edge and corner-sharing NaNa5Os octahedra. The corner-sharing octahedra are not tilted. All Na(2)-Na(2) bond lengths are 2.87 Å. The Na(2)-Os(1) bond length is 3.43 Å. Os(1) is bonded in a single-bond geometry to one Na(2) and one Sb(1) atom. The Os(1)-Sb(1) bond length is 1.11 Å. Sb(1) is bonded in a linear geometry to one Na(1) and one Os(1) atom.