data_YTl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.41
_cell_length_b   6.41
_cell_length_c   7.74
_cell_angle_alpha   103.34
_cell_angle_beta   103.34
_cell_angle_gamma   33.91
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YTl2
_chemical_formula_sum   'Y2 Tl4'
_cell_volume   172.19
_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
  Y  Y4  1  0.36  0.0  0.45  1.0
  Y  Y5  1  0.22  0.0  0.16  1.0
  Tl  Tl0  1  0.31  0.0  0.47  1.0
  Tl  Tl1  1  0.56  0.0  0.59  1.0
  Tl  Tl2  1  0.75  0.0  0.12  1.0
  Tl  Tl3  1  0.21  0.0  0.02  1.0

data_YTl2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.74
_cell_length_b   6.41
_cell_length_c   7.74
_cell_angle_alpha   103.34
_cell_angle_beta   90.0
_cell_angle_gamma   106.96
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YTl2
_chemical_formula_sum   'Y2 Tl4'
_cell_volume   172.19
_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
  Y  Y0  1  0.0  0.64  0.55  1.0
  Y  Y1  1  0.0  0.78  0.84  1.0
  Tl  Tl2  1  0.0  0.25  0.88  1.0
  Tl  Tl3  1  0.0  0.44  0.41  1.0
  Tl  Tl4  1  0.0  0.69  0.53  1.0
  Tl  Tl5  1  0.0  0.79  0.98  1.0

Y Y Tl Tl Tl Tl
YTl2 is black P-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of two YTl2 clusters. In one of the YTl2 clusters, Y(1) is bonded in a single-bond geometry to one Tl(1) and one Tl(2) atom. The Y(1)-Tl(1) bond length is 0.39 Å. The Y(1)-Tl(2) bond length is 1.52 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a single-bond geometry to one Y(1) atom. In the second Tl site, Tl(2) is bonded in a single-bond geometry to one Y(1) atom. In one of the YTl2 clusters, Y(2) is bonded in a single-bond geometry to one Tl(3) and one Tl(4) atom. The Y(2)-Tl(3) bond length is 2.98 Å. The Y(2)-Tl(4) bond length is 1.07 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(3) is bonded in a distorted single-bond geometry to one Y(2) atom. In the second Tl site, Tl(4) is bonded in a single-bond geometry to one Y(2) atom.