data_[Sr8Np4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.8806]
_cell_length_b [5.7323]
_cell_length_c [8.2148]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.8759]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sr2NpO5]
_chemical_formula_sum '[Sr8 Np4 O20]'
_cell_volume [526.1320]
_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
[
  Sr  Sr0  8  0.1698  0.4644  0.8331  1
  Np  Np1  4  0.0000  0.0000  0.0000  1
  O  O2  8  0.1302  0.2288  0.5267  1
  O  O3  8  0.1363  0.2413  0.1011  1
  O  O4  4  0.0000  0.1414  0.7500  1
]