data_[Na4Ac4N4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ac  1.1000  1.9500  1.2600
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.1123]
_cell_length_b [7.8156]
_cell_length_c [11.8668]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [NaAcNO4]
_chemical_formula_sum '[Na4 Ac4 N4 O16]'
_cell_volume [659.6427]
_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  0.2500  0.2500  0.2500  1
  Ac  Ac1  4  0.0000  0.0000  0.0000  1
  N  N2  4  0.0000  0.2500  0.7277  1
  O  O3  8  0.0000  0.1122  0.7853  1
  O  O4  8  0.1695  0.2500  0.0708  1
]