data_[Sm6Si8Ag8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.1176]
_cell_length_b [4.2792]
_cell_length_c [25.9128]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Sm3(SiAg)4]
_chemical_formula_sum '[Sm6 Si8 Ag8]'
_cell_volume [456.5892]
_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  0.0000  0.0000  0.1471  1.0
  Sm  Sm1  2  0.0000  0.5000  0.0000  1.0
  Si  Si2  4  0.0000  0.0000  0.3120  1.0
  Si  Si3  4  0.0000  0.5000  0.4559  1.0
  Ag  Ag4  4  0.0000  0.0000  0.4052  1.0
  Ag  Ag5  4  0.0000  0.5000  0.2521  1.0
]