data_[Ac2Zr4Np2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Zr  1.3300  1.5500  0.8600
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [7.1835]
_cell_length_b [7.3651]
_cell_length_c [6.9579]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [AcZr2NpO8]
_chemical_formula_sum '[Ac2 Zr4 Np2 O16]'
_cell_volume [368.1228]
_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
[
  Ac  Ac0  2  0.0000  0.0000  0.5000  1
  Zr  Zr1  4  0.0000  0.5000  0.2462  1
  Np  Np2  2  0.0000  0.0000  0.0000  1
  O  O3  8  0.2062  0.0000  0.2158  1
  O  O4  4  0.0000  0.3087  0.0000  1
  O  O5  4  0.0000  0.3305  0.5000  1
]