data_[Ta4Tl4Ag2Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Tl  1.6200  1.9000  1.3325
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.8089]
_cell_length_b [11.3806]
_cell_length_c [7.8905]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.7896]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ta2Tl2AgSe6]
_chemical_formula_sum '[Ta4 Tl4 Ag2 Se12]'
_cell_volume [596.2645]
_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
[
  Ta  Ta0  4  0.0000  0.3562  0.5000  1.0
  Tl  Tl1  4  0.0000  0.1676  0.0000  1.0
  Ag  Ag2  2  0.0000  0.0000  0.5000  1.0
  Se  Se3  8  0.2255  0.1839  0.6806  1.0
  Se  Se4  4  0.1536  0.5000  0.7385  1.0
]