data_TlCoTc2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.75
_cell_length_b   3.75
_cell_length_c   4.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TlCoTc2
_chemical_formula_sum   'Tl1 Co1 Tc2'
_cell_volume   61.02
_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  Tl3  1  0.87  0.87  0.0  1.0
  Co  Co0  1  0.0  0.0  0.0  1.0
  Tc  Tc1  1  0.0  0.87  0.17  1.0
  Tc  Tc2  1  0.87  0.0  0.17  1.0

data_TlCoTc2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.3
_cell_length_b   5.3
_cell_length_c   4.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TlCoTc2
_chemical_formula_sum   'Tl2 Co2 Tc4'
_cell_volume   122.04
_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  0.37  0.5  0.0  1.0
  Co  Co1  2  0.0  0.0  0.0  1.0
  Tc  Tc2  4  0.44  0.44  0.17  1.0

Tl Co Tc Tc
Tc2CoTl is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Tc2CoTl clusters. Tc(1) is bonded in a 3-coordinate geometry to one Tc(1), one Co(1), and one Tl(1) atom. The Tc(1)-Tc(1) bond length is 0.67 Å. The Tc(1)-Co(1) bond length is 0.88 Å. The Tc(1)-Tl(1) bond length is 0.88 Å. Co(1) is bonded in a distorted single-bond geometry to two equivalent Tc(1) and one Tl(1) atom. The Co(1)-Tl(1) bond length is 0.67 Å. Tl(1) is bonded in a 3-coordinate geometry to two equivalent Tc(1) and one Co(1) atom.