data_[Cu1Ag7]
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 [5.0127]
_cell_length_b [5.0140]
_cell_length_c [5.8130]
_cell_angle_alpha [90.0535]
_cell_angle_beta [106.8366]
_cell_angle_gamma [99.7281]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [CuAg7]
_chemical_formula_sum '[Cu1 Ag7]'
_cell_volume [137.6333]
_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  1  0.0000  0.0000  0.0000  1
  Ag  Ag1  2  0.0004  0.4983  0.7549  1
  Ag  Ag2  2  0.4917  0.2490  0.3700  1
  Ag  Ag3  2  0.4982  0.2438  0.8770  1
  Ag  Ag4  1  0.0000  0.0000  0.5000  1
]