data_[Cu7Ag1]
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 [4.5172]
_cell_length_b [4.5203]
_cell_length_c [5.2475]
_cell_angle_alpha [90.0842]
_cell_angle_beta [106.8872]
_cell_angle_gamma [99.6714]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Cu7Ag]
_chemical_formula_sum '[Cu7 Ag1]'
_cell_volume [100.9281]
_cell_formula_units_Z [1]
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  0.0009  0.2613  0.3698  1
  Cu  Cu1  2  0.0103  0.2533  0.8825  1
  Cu  Cu2  2  0.5000  0.4993  0.7599  1
  Cu  Cu3  1  0.5000  0.0000  0.0000  1
  Ag  Ag4  1  0.5000  0.0000  0.5000  1
]