[CIF]
data_Tl2SiSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.90743929
_cell_length_b   3.90743929
_cell_length_c   6.65134010
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tl2SiSe
_chemical_formula_sum   'Tl2 Si1 Se1'
_cell_volume   101.55320450
_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
  Se  Se0  1  0.00000000  0.00000000  3.32567005  1
  Si  Si1  1  0.00000000  0.00000000  0.00000000  1
  Tl  Tl2  1  1.95371964  1.95371964  1.64988061  1
  Tl  Tl3  1  1.95371964  1.95371964  5.00145949  1
[/CIF]
