data_[Sm6Ag8Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Ag  1.9300  1.6000  1.0867
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.7005]
_cell_length_b [7.4900]
_cell_length_c [15.7217]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Sm3(AgPb)4]
_chemical_formula_sum '[Sm6 Ag8 Pb8]'
_cell_volume [553.5025]
_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  0.1287  1
  Sm  Sm1  2  0.0000  0.5000  0.0000  1
  Ag  Ag2  8  0.0000  0.1974  0.6714  1
  Pb  Pb3  4  0.0000  0.2987  0.5000  1
  Pb  Pb4  4  0.0000  0.5000  0.2144  1
]