data_[Ac16Ni2Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Ni  1.9100  1.3500  0.7400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [20.0390]
_cell_length_b [4.1753]
_cell_length_c [9.9564]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.8367]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac8NiAg2]
_chemical_formula_sum '[Ac16 Ni2 Ag4]'
_cell_volume [831.1726]
_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
[
  Ac  Ac0  4  0.0102  0.0000  0.2045  1
  Ac  Ac1  4  0.0921  0.5000  0.5180  1
  Ac  Ac2  4  0.1538  0.5000  0.0004  1
  Ac  Ac3  4  0.2219  0.0000  0.3326  1
  Ni  Ni4  2  0.0000  0.5000  0.0000  1
  Ag  Ag5  4  0.1631  0.0000  0.7446  1
]