data_[Pm4Pr8Sm20Mg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  Sm  1.1700  1.8500  1.2290
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.5831]
_cell_length_b [20.3445]
_cell_length_c [10.7597]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [PmPr2Sm5Mg]
_chemical_formula_sum '[Pm4 Pr8 Sm20 Mg4]'
_cell_volume [1222.1454]
_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
[
  Pr  Pr0  8  0.0000  0.1154  0.0408  1
  Pm  Pm1  4  0.0000  0.2015  0.7500  1
  Sm  Sm2  8  0.0000  0.2886  0.0523  1
  Sm  Sm3  4  0.0000  0.0135  0.7500  1
  Sm  Sm4  4  0.0000  0.3817  0.7500  1
  Sm  Sm5  4  0.0000  0.5000  0.0000  1
  Mg  Mg6  4  0.0000  0.4057  0.2500  1
]