data_[Na2Ac4Co4]
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
  Co  1.8800  1.3500  0.7683
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [4.1124]
_cell_length_b [17.6579]
_cell_length_c [4.1612]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na(AcCo)2]
_chemical_formula_sum '[Na2 Ac4 Co4]'
_cell_volume [302.1701]
_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
[
  Na  Na0  2  0.0000  0.0000  0.0000  1
  Ac  Ac1  4  0.0000  0.3466  0.5000  1
  Co  Co2  4  0.0000  0.2242  0.0000  1
]