data_[Np4Be2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Be  1.5700  1.0500  0.5900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.4357]
_cell_length_b [7.0058]
_cell_length_c [4.2055]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.6766]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Np2BeO8]
_chemical_formula_sum '[Np4 Be2 O16]'
_cell_volume [304.7082]
_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
[
  Np  Np0  4  0.2168  0.5000  0.9184  1
  Be  Be1  2  0.0000  0.0000  0.0000  1
  O  O2  8  0.1246  0.1689  0.0220  1
  O  O3  4  0.0494  0.5000  0.7629  1
  O  O4  4  0.2338  0.5000  0.4159  1
]