data_[Sm10Y8Mg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Y  1.2200  1.8000  1.0400
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [22.4711]
_cell_length_b [3.5515]
_cell_length_c [8.8020]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.9390]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm5(Y2Mg)2]
_chemical_formula_sum '[Sm10 Y8 Mg4]'
_cell_volume [700.7948]
_cell_formula_units_Z [2]
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  0.1319  0.0000  0.0970  1
  Sm  Sm1  4  0.1834  0.0000  0.4746  1
  Sm  Sm2  2  0.0000  0.5000  0.0000  1
  Y  Y3  4  0.0724  0.0000  0.7161  1
  Y  Y4  4  0.2109  0.5000  0.8213  1
  Mg  Mg5  4  0.0546  0.5000  0.3786  1
]