data_[Cu2Ag7]
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 [4.9699]
_cell_length_b [4.9963]
_cell_length_c [6.3820]
_cell_angle_alpha [83.2528]
_cell_angle_beta [75.3433]
_cell_angle_gamma [79.8929]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Cu2Ag7]
_chemical_formula_sum '[Cu2 Ag7]'
_cell_volume [150.4918]
_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  0.1058  0.2232  0.0533  1
  Ag  Ag1  2  0.2198  0.4492  0.6233  1
  Ag  Ag2  2  0.3231  0.6696  0.1585  1
  Ag  Ag3  2  0.4427  0.8935  0.7316  1
  Ag  Ag4  1  0.0000  0.0000  0.5000  1
]