data_[Cu8Ag10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [2.8437]
_cell_length_b [8.4593]
_cell_length_c [11.4381]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Cu4Ag5]
_chemical_formula_sum '[Cu8 Ag10]'
_cell_volume [275.1522]
_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
[
  Cu  Cu0  4  0.0000  0.3435  0.3389  1
  Cu  Cu1  2  0.0000  0.0000  0.3332  1
  Cu  Cu2  2  0.0000  0.0000  0.9892  1
  Ag  Ag3  4  0.0000  0.3288  0.9899  1
  Ag  Ag4  4  0.0000  0.3353  0.6725  1
  Ag  Ag5  2  0.0000  0.0000  0.6751  1
]