data_[Pm28Er4Tm12]
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
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [19.0904]
_cell_length_b [7.1504]
_cell_length_c [12.5080]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.2420]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm7ErTm3]
_chemical_formula_sum '[Pm28 Er4 Tm12]'
_cell_volume [1531.4198]
_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  0.1590  0.9946  0.2737  1
  Pm  Pm1  8  0.1672  0.2532  0.0270  1
  Pm  Pm2  8  0.1680  0.2513  0.5290  1
  Pm  Pm3  4  0.0000  0.2846  0.2500  1
  Er  Er4  4  0.0000  0.5000  0.0000  1
  Tm  Tm5  8  0.1707  0.4975  0.2747  1
  Tm  Tm6  4  0.0000  0.0000  0.0000  1
]