data_[La12Pm4Tm8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Pm  1.1300  1.8500  1.1100
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.3229]
_cell_length_b [17.6212]
_cell_length_c [6.5461]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [La3PmTm2]
_chemical_formula_sum '[La12 Pm4 Tm8]'
_cell_volume [844.6981]
_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
[
  La  La0  8  0.0000  0.0694  0.7563  1
  La  La1  4  0.0000  0.2500  0.5178  1
  Pm  Pm2  4  0.0000  0.2500  0.0182  1
  Tm  Tm3  8  0.2500  0.1046  0.2500  1
]