data_[Cu6Ag3]
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 [P-1]
_cell_length_a [4.6329]
_cell_length_b [4.7151]
_cell_length_c [6.0536]
_cell_angle_alpha [83.7455]
_cell_angle_beta [75.4487]
_cell_angle_gamma [79.5365]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Cu2Ag]
_chemical_formula_sum '[Cu6 Ag3]'
_cell_volume [125.5895]
_cell_formula_units_Z [3]
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  2  0.0485  0.1143  0.2572  1
  Cu  Cu1  2  0.1685  0.3339  0.8554  1
  Cu  Cu2  2  0.3847  0.7916  0.9459  1
  Ag  Ag3  2  0.2706  0.5631  0.3703  1
  Ag  Ag4  1  0.5000  0.0000  0.5000  1
]