data_[Dy2Tl2Si2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Dy  1.2200  1.7500  1.1310
  Tl  1.6200  1.9000  1.3325
  Si  1.9000  1.1000  0.5400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.6910]
_cell_length_b [6.9368]
_cell_length_c [9.0281]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.5058]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [DyTlSiSe4]
_chemical_formula_sum '[Dy2 Tl2 Si2 Se8]'
_cell_volume [399.6243]
_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
[
  Dy  Dy0  2  0.2318  0.2500  0.5535  1.0
  Tl  Tl1  2  0.2439  0.2500  0.0636  1.0
  Si  Si2  2  0.2238  0.7500  0.3261  1.0
  Se  Se3  4  0.0055  0.5050  0.7133  1.0
  Se  Se4  2  0.4206  0.7500  0.1616  1.0
  Se  Se5  2  0.4255  0.7500  0.5793  1.0
]