data_[Na2Ac1Cu1F8]
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
  Cu  1.9000  1.3500  0.8200
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.1137]
_cell_length_b [5.4023]
_cell_length_c [8.3293]
_cell_angle_alpha [86.8573]
_cell_angle_beta [89.2739]
_cell_angle_gamma [85.8521]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na2AcCuF8]
_chemical_formula_sum '[Na2 Ac1 Cu1 F8]'
_cell_volume [184.3362]
_cell_formula_units_Z [1]
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  2  0.4720  0.4904  0.7737  1
  Ac  Ac1  1  0.0000  0.0000  0.5000  1
  Cu  Cu2  1  0.0000  0.0000  0.0000  1
  F  F3  2  0.0463  0.3299  0.2958  1
  F  F4  2  0.0918  0.1467  0.8090  1
  F  F5  2  0.3389  0.7725  0.9841  1
  F  F6  2  0.4913  0.2296  0.5680  1
]