data_[Np2Cl2O7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Cl  3.1600  1.0000  0.7800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.4187]
_cell_length_b [5.7604]
_cell_length_c [8.4253]
_cell_angle_alpha [86.5163]
_cell_angle_beta [79.8233]
_cell_angle_gamma [77.3863]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Np2Cl2O7]
_chemical_formula_sum '[Np2 Cl2 O7]'
_cell_volume [252.5362]
_cell_formula_units_Z [1]
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
[
  Np  Np0  2  0.3635  0.7830  0.9488  1
  Cl  Cl1  2  0.2054  0.8115  0.5652  1
  O  O2  2  0.2738  0.5047  0.0672  1
  O  O3  2  0.2872  0.6697  0.7306  1
  O  O4  2  0.4920  0.9510  0.1479  1
  O  O5  1  0.0000  0.0000  0.0000  1
]