data_HfTlCo2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.24
_cell_length_b   3.24
_cell_length_c   6.06
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfTlCo2
_chemical_formula_sum   'Hf1 Tl1 Co2'
_cell_volume   63.49
_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  Hf2  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.0  0.0  0.03  1.0
  Co  Co0  1  0.62  0.62  0.64  1.0
  Co  Co1  1  0.62  0.62  0.42  1.0

data_HfTlCo2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.58
_cell_length_b   4.58
_cell_length_c   6.06
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfTlCo2
_chemical_formula_sum   'Hf2 Tl2 Co4'
_cell_volume   126.97
_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  0.03  1.0
  Co  Co2  2  0.12  0.5  0.42  1.0
  Co  Co3  2  0.12  0.5  0.64  1.0

Hf Tl Co Co
Hf Tl Co Co 0 1 o o o 2 3 o o o 
HfCo2Tl crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HfCo2Tl clusters. Hf(1) is bonded in a single-bond geometry to one Co(1) and one Tl(1) atom. The Hf(1)-Co(1) bond length is 2.79 Å. The Hf(1)-Tl(1) bond length is 0.20 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 2-coordinate geometry to one Hf(1) and one Co(2) atom. The Co(1)-Co(2) bond length is 1.34 Å. In the second Co site, Co(2) is bonded in a 1-coordinate geometry to one Co(1) atom. Tl(1) is bonded in a single-bond geometry to one Hf(1) atom.