data_[Pm4Nd4Sm4Er12]
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
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.8399]
_cell_length_b [5.6093]
_cell_length_c [7.0770]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0170]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [PmNdSmEr3]
_chemical_formula_sum '[Pm4 Nd4 Sm4 Er12]'
_cell_volume [787.5806]
_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  0.1477  0.5000  0.0376  1
  Nd  Nd1  4  0.0546  0.0000  0.2513  1
  Sm  Sm2  4  0.1489  0.5000  0.4612  1
  Er  Er3  4  0.0236  0.5000  0.7489  1
  Er  Er4  4  0.1660  0.0000  0.7484  1
  Er  Er5  4  0.2211  0.0000  0.2495  1
]