data_[Cu4Ag8Te16]
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
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [6.3560]
_cell_length_b [8.6807]
_cell_length_c [13.9944]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [Cu(AgTe2)2]
_chemical_formula_sum '[Cu4 Ag8 Te16]'
_cell_volume [772.1310]
_cell_formula_units_Z [4]
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  0.2500  0.2500  0.7500  1
  Ag  Ag1  4  0.0000  0.0000  0.5000  1
  Ag  Ag2  4  0.0000  0.2500  0.1438  1
  Te  Te3  8  0.0000  0.0001  0.2719  1
  Te  Te4  8  0.2283  0.2500  0.9654  1
]