data_Cd2FeHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.12
_cell_length_b   10.12
_cell_length_c   10.12
_cell_angle_alpha   17.34
_cell_angle_beta   17.34
_cell_angle_gamma   17.34
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cd2FeHg
_chemical_formula_sum   'Cd2 Fe1 Hg1'
_cell_volume   80.32
_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  0.76  1.0
  Cd  Cd1  1  0.0  0.0  0.13  1.0
  Fe  Fe2  1  0.0  0.0  0.0  1.0
  Hg  Hg3  1  0.0  0.0  0.94  1.0

data_Cd2FeHg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.28
_cell_length_b   3.05
_cell_length_c   10.12
_cell_angle_alpha   90.0
_cell_angle_beta   100.03
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Cd2FeHg
_chemical_formula_sum   'Cd4 Fe2 Hg2'
_cell_volume   160.63
_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  -0.0  0.0  0.24  1.0
  Cd  Cd1  2  0.0  0.0  0.87  1.0
  Fe  Fe2  2  0.0  0.0  0.0  1.0
  Hg  Hg3  2  -0.0  0.0  0.06  1.0

Cd Cd Fe Hg
FeHgCd2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two FeHgCd2 clusters. Fe(1) is bonded in a linear geometry to one Hg(1) and one Cd(2) atom. The Fe(1)-Hg(1) bond length is 0.56 Å. The Fe(1)-Cd(2) bond length is 1.30 Å. Hg(1) is bonded in a distorted single-bond geometry to one Fe(1) and one Cd(1) atom. The Hg(1)-Cd(1) bond length is 1.86 Å. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a single-bond geometry to one Hg(1) atom. In the second Cd site, Cd(2) is bonded in a single-bond geometry to one Fe(1) atom.