data_[K6Np2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P6_322]
_cell_length_a [6.5114]
_cell_length_b [6.5114]
_cell_length_c [10.7263]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [182]
_chemical_formula_structural [K3NpO6]
_chemical_formula_sum '[K6 Np2 O12]'
_cell_volume [393.8523]
_cell_formula_units_Z [2]
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
[
  K  K0  4  0.3333  0.6667  0.5803  1
  K  K1  2  0.0000  0.0000  0.0000  1
  Np  Np2  2  0.3333  0.6667  0.2500  1
  O  O3  12  0.1002  0.4198  0.1395  1
]