data_[Sm4Cu2Si2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Cu  1.9000  1.3500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.9920]
_cell_length_b [4.1631]
_cell_length_c [8.0886]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.7164]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Sm2CuSi]
_chemical_formula_sum '[Sm4 Cu2 Si2]'
_cell_volume [188.7276]
_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  2  0.2092  0.7500  0.9105  1.0
  Sm  Sm1  2  0.2228  0.7500  0.4439  1.0
  Si  Si2  2  0.3393  0.2500  0.2075  1.0
  Cu  Cu3  2  0.4047  0.2500  0.7284  1.0
]