data_[Sm4Mg6Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Mg  1.3100  1.5000  0.8600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.3247]
_cell_length_b [4.6405]
_cell_length_c [7.7927]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.0383]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm2Mg3Pb2]
_chemical_formula_sum '[Sm4 Mg6 Pb4]'
_cell_volume [382.2240]
_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  0.1434  0.0000  0.7845  1.0
  Mg  Mg1  4  0.1065  0.5000  0.4310  1.0
  Mg  Mg2  2  0.0000  0.5000  0.0000  1.0
  Pb  Pb3  4  0.1563  0.0000  0.2249  1.0
]