data_[Tb9Pm3Ho18]
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 [R3]
_cell_length_a [9.8118]
_cell_length_b [9.8118]
_cell_length_c [11.6200]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Tb3PmHo6]
_chemical_formula_sum '[Tb9 Pm3 Ho18]'
_cell_volume [968.7942]
_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  3  0.0000  0.0000  0.3565  1
  Tb  Tb1  3  0.0000  0.0000  0.6026  1
  Tb  Tb2  3  0.0000  0.0000  0.8531  1
  Pm  Pm3  3  0.0000  0.0000  0.1017  1
  Ho  Ho4  9  0.0034  0.3349  0.7644  1
  Ho  Ho5  9  0.0049  0.6686  0.2643  1
]