data_HfTlSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.94
_cell_length_b   3.94
_cell_length_c   6.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfTlSn2
_chemical_formula_sum   'Hf1 Tl1 Sn2'
_cell_volume   98.99
_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
  Hf  Hf0  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.0  0.0  0.19  1.0
  Sn  Sn1  1  0.97  0.97  0.47  1.0
  Sn  Sn2  1  0.97  0.97  0.9  1.0

data_HfTlSn2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.57
_cell_length_b   5.57
_cell_length_c   6.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfTlSn2
_chemical_formula_sum   'Hf2 Tl2 Sn4'
_cell_volume   197.98
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Hf  Hf0  2  0.0  0.0  0.0  1.0
  Tl  Tl1  2  0.0  0.0  0.19  1.0
  Sn  Sn2  2  0.47  0.5  0.47  1.0
  Sn  Sn3  2  0.47  0.5  0.9  1.0

Hf Tl Sn Sn
HfTlSn2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HfTlSn2 clusters. Hf(1) is bonded in a distorted linear geometry to one Tl(1) and one Sn(2) atom. The Hf(1)-Tl(1) bond length is 1.18 Å. The Hf(1)-Sn(2) bond length is 0.64 Å. Tl(1) is bonded in a linear geometry to one Hf(1) and one Sn(1) atom. The Tl(1)-Sn(1) bond length is 1.80 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a single-bond geometry to one Tl(1) atom. In the second Sn site, Sn(2) is bonded in a single-bond geometry to one Hf(1) atom.