data_[Pm4Y24Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [13.4573]
_cell_length_b [11.7117]
_cell_length_c [9.0724]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.6366]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm(Y3Er)2]
_chemical_formula_sum '[Pm4 Y24 Er8]'
_cell_volume [1162.0953]
_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  0.0000  0.4197  0.7500  1
  Y  Y1  8  0.0820  0.1103  0.4853  1
  Y  Y2  8  0.1517  0.1515  0.9042  1
  Y  Y3  8  0.2102  0.4065  0.6360  1
  Er  Er4  8  0.1072  0.3290  0.1943  1
]