data_[Ac8Mg16Ag8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Mg  1.3100  1.5000  0.8600
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [17.4720]
_cell_length_b [8.2778]
_cell_length_c [6.0134]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [AcMg2Ag]
_chemical_formula_sum '[Ac8 Mg16 Ag8]'
_cell_volume [869.7210]
_cell_formula_units_Z [8]
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  0.1052  0.2500  0.7490  1
  Ac  Ac1  4  0.1391  0.7500  0.5468  1
  Mg  Mg2  8  0.0376  0.0570  0.2410  1
  Mg  Mg3  8  0.2134  0.5566  0.0509  1
  Ag  Ag4  4  0.0702  0.7500  0.0345  1
  Ag  Ag5  4  0.1819  0.2500  0.2605  1
]