data_Si2MoOs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.89
_cell_length_b   4.41
_cell_length_c   4.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2MoOs
_chemical_formula_sum   'Si2 Mo1 Os1'
_cell_volume   55.81
_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
  Si  Si2  1  0.45  0.21  0.21  1.0
  Si  Si3  1  0.0  0.0  0.48  1.0
  Mo  Mo0  1  0.0  0.21  0.09  1.0
  Os  Os1  1  0.45  0.0  0.14  1.0

data_Si2MoOs
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.89
_cell_length_b   4.37
_cell_length_c   4.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2MoOs
_chemical_formula_sum   'Si2 Mo1 Os1'
_cell_volume   55.81
_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
  Si  Si0  1  0.0  0.52  0.0  1.0
  Si  Si1  1  0.55  0.79  0.79  1.0
  Mo  Mo2  1  0.0  0.91  0.79  1.0
  Os  Os3  1  0.55  0.86  0.0  1.0

Si Si Mo Os