data_[Ac4Np2Ni2O12]
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
  Ni  1.9100  1.3500  0.7400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [5.8090]
_cell_length_b [8.4320]
_cell_length_c [6.1229]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Ac2NpNiO6]
_chemical_formula_sum '[Ac4 Np2 Ni2 O12]'
_cell_volume [299.9096]
_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  4  0.0000  0.2288  0.7933  1
  Np  Np1  2  0.0000  0.0000  0.2863  1
  Ni  Ni2  2  0.0000  0.5000  0.2265  1
  O  O3  4  0.0000  0.2571  0.1994  1
  O  O4  4  0.2435  0.0000  0.5480  1
  O  O5  4  0.2497  0.5000  0.9838  1
]