data_[Na4Np4Ti4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Np  1.3600  1.7500  1.0000
  Ti  1.5400  1.4000  0.8517
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.8605]
_cell_length_b [9.2333]
_cell_length_c [8.0042]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.9264]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaNpTiO5]
_chemical_formula_sum '[Na4 Np4 Ti4 O20]'
_cell_volume [517.9527]
_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
[
  Na  Na0  4  0.0000  0.3205  0.2500  1
  Np  Np1  4  0.0000  0.0000  0.0000  1
  Ti  Ti2  4  0.0000  0.3380  0.7500  1
  O  O3  8  0.0456  0.2250  0.5847  1
  O  O4  8  0.1963  0.4641  0.8748  1
  O  O5  4  0.0000  0.0668  0.2500  1
]