data_GaNiOs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.99
_cell_length_b   2.99
_cell_length_c   5.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaNiOs2
_chemical_formula_sum   'Ga1 Ni1 Os2'
_cell_volume   53.61
_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
  Ga  Ga0  1  0.0  0.0  0.99  1.0
  Ni  Ni1  1  0.0  0.0  0.0  1.0
  Os  Os2  1  0.5  0.5  0.42  1.0
  Os  Os3  1  0.5  0.5  0.57  1.0

data_GaNiOs2
_symmetry_space_group_name_H-M   P4/mmm
_cell_length_a   2.99
_cell_length_b   2.99
_cell_length_c   5.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   123
_chemical_formula_structural   GaNiOs2
_chemical_formula_sum   'Ga1 Ni1 Os2'
_cell_volume   53.61
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-y, x, z'
  4  'y, -x, -z'
  5  '-x, -y, z'
  6  'x, y, -z'
  7  'y, -x, z'
  8  '-y, x, -z'
  9  'x, -y, -z'
  10  '-x, y, z'
  11  '-y, -x, -z'
  12  'y, x, z'
  13  '-x, y, -z'
  14  'x, -y, z'
  15  'y, x, -z'
  16  '-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
  Ga  Ga0  1  0.0  0.0  0.0  1.0
  Ni  Ni1  1  0.0  0.0  0.0  1.0
  Os  Os2  2  0.5  0.5  0.42  1.0

Ga Ni Os Os
Ga Ni Os Os 0 1 o o + 2 3 o o o 
(Os)2NiGa is beta oxygen-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two gallium--nickel (1/1) molecules and two Os clusters. In each Os cluster, there are two inequivalent Os sites. In the first Os site, Os(1) is bonded in a single-bond geometry to one Os(2) atom. The Os(1)-Os(2) bond length is 0.92 Å. In the second Os site, Os(2) is bonded in a single-bond geometry to one Os(1) atom.