data_[Tl2Cu2Ag4Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [I-42m]
_cell_length_a [6.5862]
_cell_length_b [6.5862]
_cell_length_c [10.2289]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [121]
_chemical_formula_structural [TlCu(AgCl2)2]
_chemical_formula_sum '[Tl2 Cu2 Ag4 Cl8]'
_cell_volume [443.7064]
_cell_formula_units_Z [2]
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
[
  Tl  Tl0  2  0.0000  0.0000  0.0000  1
  Cu  Cu1  2  0.0000  0.0000  0.5000  1
  Ag  Ag2  4  0.0000  0.5000  0.2500  1
  Cl  Cl3  8  0.2005  0.2005  0.6408  1
]