data_Li2SiOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.1
_cell_length_b   9.1
_cell_length_c   9.1
_cell_angle_alpha   16.85
_cell_angle_beta   16.85
_cell_angle_gamma   16.85
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2SiOs
_chemical_formula_sum   'Li2 Si1 Os1'
_cell_volume   55.25
_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
  Li  Li0  1  0.0  0.0  0.75  1.0
  Li  Li1  1  0.0  0.0  0.16  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Os  Os2  1  0.0  0.0  0.46  1.0

data_Li2SiOs
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.62
_cell_length_b   2.67
_cell_length_c   9.1
_cell_angle_alpha   90.0
_cell_angle_beta   99.74
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Li2SiOs
_chemical_formula_sum   'Li4 Si2 Os2'
_cell_volume   110.51
_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
  Li  Li0  2  0.0  0.0  0.25  1.0
  Li  Li1  2  0.0  0.0  0.84  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0
  Os  Os3  2  0.0  0.0  0.54  1.0

Li Li Si Os
Li Li Si Os 0 0 o + - 0 0 + - o 0 0 + o - 0 3 o o o 0 2 o o + 1 2 o o o 1 3 o o o 3 3 o + - 3 3 + - o 3 3 + o - 