data_Re2HgGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.89
_cell_length_b   5.89
_cell_length_c   5.89
_cell_angle_alpha   137.77
_cell_angle_beta   137.77
_cell_angle_gamma   61.26
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Re2HgGe2
_chemical_formula_sum   'Re2 Hg1 Ge2'
_cell_volume   91.47
_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
  Re  Re3  1  0.0  0.12  0.54  1.0
  Re  Re4  1  0.12  0.0  0.54  1.0
  Hg  Hg2  1  0.0  0.0  0.0  1.0
  Ge  Ge0  1  0.0  0.0  0.27  1.0
  Ge  Ge1  1  0.0  0.0  0.87  1.0

data_Re2HgGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.01
_cell_length_b   6.01
_cell_length_c   5.89
_cell_angle_alpha   90.0
_cell_angle_beta   120.63
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Re2HgGe2
_chemical_formula_sum   'Re4 Hg2 Ge4'
_cell_volume   182.93
_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
  Re  Re0  4  0.03  0.44  0.59  1.0
  Hg  Hg1  2  0.0  0.0  0.0  1.0
  Ge  Ge2  2  0.13  0.0  0.13  1.0
  Ge  Ge3  2  0.23  0.5  0.73  1.0

Re Re Hg Ge Ge
Re2HgGe2 is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Re2HgGe2 clusters. Re(1) is bonded in a 2-coordinate geometry to one Re(1) and one Ge(1) atom. The Re(1)-Re(1) bond length is 0.74 Å. The Re(1)-Ge(1) bond length is 1.12 Å. Hg(1) is bonded in a linear geometry to one Ge(1) and one Ge(2) atom. The Hg(1)-Ge(1) bond length is 1.61 Å. The Hg(1)-Ge(2) bond length is 0.77 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 3-coordinate geometry to two equivalent Re(1) and one Hg(1) atom. In the second Ge site, Ge(2) is bonded in a distorted single-bond geometry to one Hg(1) atom.