data_CdHgGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.1
_cell_length_b   7.1
_cell_length_c   7.1
_cell_angle_alpha   154.26
_cell_angle_beta   154.26
_cell_angle_gamma   36.72
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CdHgGe
_chemical_formula_sum   'Cd1 Hg1 Ge1'
_cell_volume   67.35
_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
  Cd  Cd0  1  0.0  0.0  0.41  1.0
  Hg  Hg2  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.0  0.0  0.54  1.0

data_CdHgGe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.47
_cell_length_b   4.47
_cell_length_c   7.1
_cell_angle_alpha   90.0
_cell_angle_beta   108.36
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CdHgGe
_chemical_formula_sum   'Cd2 Hg2 Ge2'
_cell_volume   134.7
_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
  Cd  Cd0  2  0.41  0.0  0.41  1.0
  Hg  Hg1  2  0.0  0.0  0.0  1.0
  Ge  Ge2  2  0.04  0.5  0.54  1.0

Cd Hg Ge
HgCdGe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HgCdGe clusters. Hg(1) is bonded in a distorted single-bond geometry to one Cd(1) atom. The Hg(1)-Cd(1) bond length is 2.89 Å. Cd(1) is bonded in a single-bond geometry to one Hg(1) and one Ge(1) atom. The Cd(1)-Ge(1) bond length is 0.91 Å. Ge(1) is bonded in a single-bond geometry to one Cd(1) atom.