data_[Pm4Sm12Mg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.5564]
_cell_length_b [5.3155]
_cell_length_c [10.4886]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.4868]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [PmSm3Mg]
_chemical_formula_sum '[Pm4 Sm12 Mg4]'
_cell_volume [640.1693]
_cell_formula_units_Z [4]
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
[
  Pm  Pm0  4  0.0332  0.5000  0.3372  1
  Sm  Sm1  4  0.0845  0.0000  0.8732  1
  Sm  Sm2  4  0.1554  0.0000  0.5531  1
  Sm  Sm3  4  0.2295  0.0000  0.2255  1
  Mg  Mg4  4  0.1277  0.5000  0.0497  1
]