data_[Pm8Pr2Er4Tm4]
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
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.3679]
_cell_length_b [3.6046]
_cell_length_c [9.6594]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.3668]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm4Pr(ErTm)2]
_chemical_formula_sum '[Pm8 Pr2 Er4 Tm4]'
_cell_volume [592.8547]
_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  0.0153  0.5000  0.3286  1
  Pm  Pm1  4  0.1792  0.0000  0.2462  1
  Pr  Pr2  2  0.0000  0.0000  0.0000  1
  Er  Er3  4  0.1521  0.0000  0.5953  1
  Tm  Tm4  4  0.1658  0.5000  0.9206  1
]