The material structure described by Tb2Tl crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 14-coordinate geometry to two equivalent Tb(1), six equivalent Tb(2), and six equivalent Tl(1) atoms. In the second Tb site, Tb(2) is bonded to six equivalent Tb(1) and five equivalent Tl(1) atoms to form a mixture of distorted corner and face-sharing TbTb6Tl5 trigonal bipyramids. Tl(1) is bonded in a 11-coordinate geometry to five equivalent Tb(2) and six equivalent Tb(1) atoms. is represented by the CIF file [CIF]
data_Tb2Tl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.397
_cell_length_b   5.397
_cell_length_c   6.710
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   169.254
_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
  Tb  Tb0  1  0.000  0.000  0.000  1.0
  Tb  Tb1  1  0.000  0.000  0.500  1.0
  Tb  Tb2  1  0.333  0.667  0.750  1.0
  Tb  Tb3  1  0.667  0.333  0.250  1.0
  Tl  Tl4  1  0.333  0.667  0.250  1.0
  Tl  Tl5  1  0.667  0.333  0.750  1.0
[/CIF]
.
The material structure described by Tb2Tl crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 14-coordinate geometry to two equivalent Tb(1), six equivalent Tb(2), and six equivalent Tl(1) atoms. In the second Tb site, Tb(2) is bonded to six equivalent Tb(1) and five equivalent Tl(1) atoms to form a mixture of distorted corner and face-sharing TbTb6Tl5 trigonal bipyramids. Tl(1) is bonded in a 11-coordinate geometry to five equivalent Tb(2) and six equivalent Tb(1) atoms. is represented by the CIF file [CIF]
data_Tb2Tl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.397
_cell_length_b   5.397
_cell_length_c   6.710
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   169.254
_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
  Tb  Tb0  1  0.000  0.000  0.000  1.0
  Tb  Tb1  1  0.000  0.000  0.500  1.0
  Tb  Tb2  1  0.333  0.667  0.750  1.0
  Tb  Tb3  1  0.667  0.333  0.250  1.0
  Tl  Tl4  1  0.333  0.667  0.250  1.0
  Tl  Tl5  1  0.667  0.333  0.750  1.0
[/CIF]
.