data_[Ac2Np2Cr4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Np  1.3600  1.7500  1.0000
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [7.9416]
_cell_length_b [7.9149]
_cell_length_c [5.5908]
_cell_angle_alpha [90.0000]
_cell_angle_beta [134.7107]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [AcNpCr2O6]
_chemical_formula_sum '[Ac2 Np2 Cr4 O12]'
_cell_volume [249.7436]
_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  0.2628  0.5000  0.4633  1
  Np  Np1  2  0.2831  0.0000  0.4723  1
  Cr  Cr2  4  0.2674  0.2499  0.9680  1
  O  O3  4  0.0017  0.3041  0.9391  1
  O  O4  4  0.0062  0.2928  0.4679  1
  O  O5  2  0.1977  0.0000  0.9300  1
  O  O6  2  0.3657  0.5000  0.0592  1
]