data_Tl2ZnTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.89
_cell_length_b   4.89
_cell_length_c   3.32
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tl2ZnTc
_chemical_formula_sum   'Tl2 Zn1 Tc1'
_cell_volume   79.43
_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  Tl1  1  0.45  0.0  0.66  1.0
  Tl  Tl2  1  0.0  0.45  0.66  1.0
  Zn  Zn3  1  0.0  0.0  0.0  1.0
  Tc  Tc0  1  0.45  0.45  0.0  1.0

data_Tl2ZnTc
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.92
_cell_length_b   6.92
_cell_length_c   3.32
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Tl2ZnTc
_chemical_formula_sum   'Tl4 Zn2 Tc2'
_cell_volume   158.87
_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  4  0.22  0.22  0.66  1.0
  Zn  Zn1  2  0.0  0.0  0.0  1.0
  Tc  Tc2  2  0.45  0.0  0.0  1.0

Tl Tl Zn Tc
TcZnTl2 crystallizes in the monoclinic Cm space group. Tc(1) is bonded in a 2-coordinate geometry to one Zn(1) and two equivalent Tl(1) atoms. The Tc(1)-Zn(1) bond length is 3.08 Å. Both Tc(1)-Tl(1) bond lengths are 2.45 Å. Zn(1) is bonded in a 7-coordinate geometry to one Tc(1) and six equivalent Tl(1) atoms. There are a spread of Zn(1)-Tl(1) bond distances ranging from 2.45-3.09 Å. Tl(1) is bonded in a 1-coordinate geometry to one Tc(1) and three equivalent Zn(1) atoms.