data_[Pm4Er16Al2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
  Al  1.6100  1.2500  0.6750
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.1257]
_cell_length_b [5.4382]
_cell_length_c [6.3999]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.1873]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2Er8Al]
_chemical_formula_sum '[Pm4 Er16 Al2]'
_cell_volume [663.8720]
_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  0.2425  0.0000  0.3320  1
  Er  Er1  4  0.0422  0.0000  0.2550  1
  Er  Er2  4  0.0772  0.5000  0.6038  1
  Er  Er3  4  0.1527  0.0000  0.8145  1
  Er  Er4  4  0.1565  0.5000  0.1227  1
  Al  Al5  2  0.0000  0.5000  0.0000  1
]