data_[Pa3Ta3Ni18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pa  1.5000  1.8000  1.0400
  Ta  1.5000  1.4500  0.8200
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.5261]
_cell_length_b [6.5261]
_cell_length_c [9.6859]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [PaTaNi6]
_chemical_formula_sum '[Pa3 Ta3 Ni18]'
_cell_volume [357.2524]
_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
[
  Pa  Pa0  3  -0.0000  -0.0000  0.5000  1
  Ta  Ta1  3  0.0000  0.0000  0.0000  1
  Ni  Ni2  18  0.0894  0.5447  0.3910  1
]