data_In2HgGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.39
_cell_length_b   3.39
_cell_length_c   8.7
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   In2HgGe
_chemical_formula_sum   'In2 Hg1 Ge1'
_cell_volume   100.27
_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
  In  In2  1  0.7  0.7  0.69  1.0
  In  In3  1  0.7  0.7  0.01  1.0
  Hg  Hg1  1  0.0  0.0  0.35  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0

data_In2HgGe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.8
_cell_length_b   4.8
_cell_length_c   8.7
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   In2HgGe
_chemical_formula_sum   'In4 Hg2 Ge2'
_cell_volume   200.54
_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
  In  In0  2  0.2  0.5  0.01  1.0
  In  In1  2  0.2  0.5  0.69  1.0
  Hg  Hg2  2  0.0  0.0  0.35  1.0
  Ge  Ge3  2  0.0  0.0  0.0  1.0

In In Hg Ge
HgIn2Ge crystallizes in the monoclinic Cm space group. Hg(1) is bonded in a 7-coordinate geometry to four equivalent Hg(1), one In(1), one In(2), and one Ge(1) atom. All Hg(1)-Hg(1) bond lengths are 3.39 Å. The Hg(1)-In(1) bond length is 3.32 Å. The Hg(1)-In(2) bond length is 3.32 Å. The Hg(1)-Ge(1) bond length is 3.06 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 7-coordinate geometry to one Hg(1), one In(2), four equivalent In(1), and one Ge(1) atom. The In(1)-In(2) bond length is 2.74 Å. All In(1)-In(1) bond lengths are 3.39 Å. The In(1)-Ge(1) bond length is 3.03 Å. In the second In site, In(2) is bonded in a distorted single-bond geometry to one Hg(1), one In(1), and one Ge(1) atom. The In(2)-Ge(1) bond length is 1.46 Å. Ge(1) is bonded in a distorted single-bond geometry to one Hg(1), one In(1), and one In(2) atom.