data_TlZnGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.46
_cell_length_b   3.46
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TlZnGe2
_chemical_formula_sum   'Tl1 Zn1 Ge2'
_cell_volume   87.99
_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
  Tl  Tl2  1  0.73  0.73  0.8  1.0
  Zn  Zn3  1  0.0  0.0  0.86  1.0
  Ge  Ge0  1  0.73  0.73  0.33  1.0
  Ge  Ge1  1  0.0  0.0  0.37  1.0

data_TlZnGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TlZnGe2
_chemical_formula_sum   'Tl2 Zn2 Ge4'
_cell_volume   175.99
_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  0.23  0.5  0.8  1.0
  Zn  Zn1  2  0.0  0.0  0.86  1.0
  Ge  Ge2  2  0.0  0.0  0.37  1.0
  Ge  Ge3  2  0.23  0.5  0.33  1.0

Tl Zn Ge Ge
Tl Zn Ge Ge 0 1 + + o 2 3 + + o 
ZnTl(Ge)2 is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two ge2h6 molecules and two ZnTl clusters. In each ZnTl cluster, Zn(1) is bonded in a distorted single-bond geometry to one Tl(1) atom. The Zn(1)-Tl(1) bond length is 1.38 Å. Tl(1) is bonded in a distorted single-bond geometry to one Zn(1) atom.