data_[Pm6Ga18Ni18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ga  1.8100  1.3000  0.7600
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [6.4566]
_cell_length_b [6.4566]
_cell_length_c [18.8396]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Pm(GaNi)3]
_chemical_formula_sum '[Pm6 Ga18 Ni18]'
_cell_volume [680.1628]
_cell_formula_units_Z [6]
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  6  0.0000  0.0000  0.3422  1
  Ga  Ga1  18  0.0370  0.6082  0.8746  1
  Ni  Ni2  18  0.0109  0.7823  0.0750  1
]