data_[Li4Ac6Cu8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Ac  1.1000  1.9500  1.2600
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4862]
_cell_length_b [4.4655]
_cell_length_c [8.8948]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.2176]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Li2Ac3Cu4]
_chemical_formula_sum '[Li4 Ac6 Cu8]'
_cell_volume [430.8090]
_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
[
  Li  Li0  4  0.1502  0.5000  0.3139  1
  Ac  Ac1  4  0.1449  0.5000  0.6849  1
  Ac  Ac2  2  0.0000  0.0000  0.0000  1
  Cu  Cu3  4  0.0715  0.0000  0.4066  1
  Cu  Cu4  4  0.2261  0.5000  0.0551  1
]