data_[Sm4Er8Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.9675]
_cell_length_b [12.1289]
_cell_length_c [8.9178]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [SmEr2Os]
_chemical_formula_sum '[Sm4 Er8 Os4]'
_cell_volume [429.1362]
_cell_formula_units_Z [4]
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
[
  Sm  Sm0  4  0.0000  0.4264  0.2500  1.0
  Er  Er1  8  0.0000  0.1471  0.0667  1.0
  Os  Os2  4  0.0000  0.2436  0.7500  1.0
]