data_[Sm4Pu4Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Pu  1.2800  1.7500  0.9675
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [4.6850]
_cell_length_b [24.2224]
_cell_length_c [3.5177]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Sm2Pu2Pb3]
_chemical_formula_sum '[Sm4 Pu4 Pb6]'
_cell_volume [399.2010]
_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  0.4242  0.5000  1
  Pu  Pu1  4  0.0000  0.2857  0.5000  1
  Pb  Pb2  4  0.0000  0.1526  0.0000  1
  Pb  Pb3  2  0.0000  0.0000  0.0000  1
]