data_[Pm4Nd4Sm4Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  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 [11.8739]
_cell_length_b [3.5912]
_cell_length_c [11.8655]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.1766]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2Nd2Sm2Mg]
_chemical_formula_sum '[Pm4 Nd4 Sm4 Mg2]'
_cell_volume [468.5314]
_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
[
  Pm  Pm0  4  0.2384  0.0000  0.3652  1
  Nd  Nd1  4  0.0449  0.5000  0.7607  1
  Sm  Sm2  4  0.1711  0.5000  0.0853  1
  Mg  Mg3  2  0.0000  0.0000  0.5000  1
]