data_[Ac8Mg12Ag16]
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 [Cmce]
_cell_length_a [6.3261]
_cell_length_b [17.1946]
_cell_length_c [8.3207]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Ac2Mg3Ag4]
_chemical_formula_sum '[Ac8 Mg12 Ag16]'
_cell_volume [905.0851]
_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
[
  Ac  Ac0  8  0.0000  0.1095  0.4115  1
  Mg  Mg1  8  0.2500  0.2227  0.7500  1
  Mg  Mg2  4  0.0000  0.0000  0.0000  1
  Ag  Ag3  8  0.0000  0.1793  0.0263  1
  Ag  Ag4  8  0.2500  0.0571  0.7500  1
]