data_[K4Np4B4O16]
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
  B  2.0400  0.8500  0.4100
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [6.4460]
_cell_length_b [9.5397]
_cell_length_c [6.6840]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [KNpBO4]
_chemical_formula_sum '[K4 Np4 B4 O16]'
_cell_volume [411.0257]
_cell_formula_units_Z [4]
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  0.0000  0.5000  0.0000  1
  Np  Np1  4  0.0000  0.1616  0.7500  1
  B  B2  4  0.0000  0.1214  0.2500  1
  O  O3  8  0.0000  0.2076  0.0657  1
  O  O4  8  0.1844  0.0218  0.2500  1
]