data_Tl2CoPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.68
_cell_length_b   9.68
_cell_length_c   9.68
_cell_angle_alpha   20.55
_cell_angle_beta   20.55
_cell_angle_gamma   20.55
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tl2CoPb
_chemical_formula_sum   'Tl2 Co1 Pb1'
_cell_volume   97.89
_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  Tl2  1  0.0  0.0  0.63  1.0
  Tl  Tl3  1  0.0  0.0  0.79  1.0
  Co  Co0  1  0.0  0.0  0.0  1.0
  Pb  Pb1  1  0.0  0.0  0.21  1.0

data_Tl2CoPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.98
_cell_length_b   3.45
_cell_length_c   9.68
_cell_angle_alpha   90.0
_cell_angle_beta   101.89
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Tl2CoPb
_chemical_formula_sum   'Tl4 Co2 Pb2'
_cell_volume   195.77
_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
  Tl  Tl0  2  -0.0  0.0  0.37  1.0
  Tl  Tl1  2  -0.0  0.0  0.21  1.0
  Co  Co2  2  0.0  0.0  0.0  1.0
  Pb  Pb3  2  -0.0  0.0  0.79  1.0

Tl Tl Co Pb
CoTl2Pb is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CoTl2Pb clusters. Co(1) is bonded in a linear geometry to one Tl(2) and one Pb(1) atom. The Co(1)-Tl(2) bond length is 2.05 Å. The Co(1)-Pb(1) bond length is 2.03 Å. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a single-bond geometry to one Tl(2) atom. The Tl(1)-Tl(2) bond length is 1.53 Å. In the second Tl site, Tl(2) is bonded in a linear geometry to one Co(1) and one Tl(1) atom. Pb(1) is bonded in a single-bond geometry to one Co(1) atom.