data_[Pm6Np3B6N18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Np  1.3600  1.7500  1.0000
  B  2.0400  0.8500  0.4100
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.3402]
_cell_length_b [5.3402]
_cell_length_c [16.4001]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Pm2Np(BN3)2]
_chemical_formula_sum '[Pm6 Np3 B6 N18]'
_cell_volume [405.0301]
_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
[
  Pm  Pm0  6  0.0000  0.0000  0.2132  1
  Np  Np1  3  0.0000  0.0000  0.0000  1
  B  B2  6  0.0000  0.0000  0.4176  1
  N  N3  18  0.0183  0.5092  0.2478  1
]