data_[Tl2Sn7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P6mm]
_cell_length_a [8.1611]
_cell_length_b [8.1611]
_cell_length_c [17.8226]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [183]
_chemical_formula_structural [Tl2Sn7]
_chemical_formula_sum '[Tl2 Sn7]'
_cell_volume [1028.0132]
_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
[
  Tl  Tl0  2  0.3333  0.6667  0.6130  1
  Sn  Sn1  6  0.2045  0.4091  0.4547  1
  Sn  Sn2  1  0.0000  0.0000  0.5459  1
]