data_[Tb9Pm18Ho6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Pm  1.1300  1.8500  1.1100
  Ho  1.2300  1.7500  1.0410
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [3.6036]
_cell_length_b [3.6036]
_cell_length_c [96.7399]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Tb3(Pm3Ho)2]
_chemical_formula_sum '[Tb9 Pm18 Ho6]'
_cell_volume [1087.9720]
_cell_formula_units_Z [3]
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
[
  Tb  Tb0  6  0.0000  0.0000  0.2727  1
  Tb  Tb1  3  0.0000  0.0000  0.0000  1
  Pm  Pm2  6  0.0000  0.0000  0.0910  1
  Pm  Pm3  6  0.0000  0.0000  0.1822  1
  Pm  Pm4  6  0.0000  0.0000  0.3637  1
  Ho  Ho5  6  0.0000  0.0000  0.4544  1
]