data_[Pm12Er4Tm4]
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 [Cm]
_cell_length_a [16.6357]
_cell_length_b [5.6845]
_cell_length_c [7.0715]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.1023]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Pm3ErTm]
_chemical_formula_sum '[Pm12 Er4 Tm4]'
_cell_volume [653.8582]
_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  2  0.0033  0.0000  0.6834  1
  Pm  Pm1  2  0.1129  0.5000  0.2502  1
  Pm  Pm2  2  0.2145  0.0000  0.0402  1
  Pm  Pm3  2  0.3083  0.5000  0.3469  1
  Pm  Pm4  2  0.4249  0.0000  0.8976  1
  Pm  Pm5  2  0.4992  0.5000  0.1907  1
  Er  Er6  2  0.1162  0.5000  0.7438  1
  Er  Er7  2  0.4213  0.0000  0.3993  1
  Tm  Tm8  2  0.2149  0.0000  0.5498  1
  Tm  Tm9  2  0.3124  0.5000  0.8422  1
]