data_[Pm12Sm8Er16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.5358]
_cell_length_b [11.6423]
_cell_length_c [6.1064]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.9326]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm3(SmEr2)2]
_chemical_formula_sum '[Pm12 Sm8 Er16]'
_cell_volume [1166.9882]
_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  8  0.1639  0.1493  0.0864  1
  Pm  Pm1  4  0.0000  0.3550  0.2500  1
  Sm  Sm2  8  0.1073  0.3822  0.7827  1
  Er  Er3  8  0.0603  0.1114  0.5422  1
  Er  Er4  8  0.2318  0.3876  0.3706  1
]