data_[Tb8Pm24Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.4269]
_cell_length_b [11.7775]
_cell_length_c [6.2240]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.0016]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tb2Pm6Er]
_chemical_formula_sum '[Tb8 Pm24 Er4]'
_cell_volume [1197.5489]
_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
[
  Tb  Tb0  8  0.1671  0.4015  0.0824  1
  Pm  Pm1  8  0.0471  0.3589  0.5136  1
  Pm  Pm2  8  0.1184  0.1407  0.8199  1
  Pm  Pm3  8  0.2128  0.1405  0.3475  1
  Er  Er4  4  0.0000  0.0987  0.2500  1
]