data_[Tl2Si2Ag2Te8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.0868]
_cell_length_b [6.5192]
_cell_length_c [10.8378]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.1666]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [TlSiAgTe4]
_chemical_formula_sum '[Tl2 Si2 Ag2 Te8]'
_cell_volume [485.4842]
_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  0.1796  0.2500  0.0203  1
  Si  Si1  2  0.2541  0.7500  0.2880  1
  Ag  Ag2  2  0.1295  0.2500  0.5236  1
  Te  Te3  4  0.0285  0.5044  0.7169  1
  Te  Te4  2  0.3599  0.7500  0.0882  1
  Te  Te5  2  0.4914  0.7500  0.5060  1
]