data_HfGe2Au
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.7
_cell_length_b   4.7
_cell_length_c   3.3
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfGe2Au
_chemical_formula_sum   'Hf1 Ge2 Au1'
_cell_volume   72.85
_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
  Hf  Hf3  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.65  0.67  0.65  1.0
  Ge  Ge2  1  0.65  0.33  0.65  1.0
  Au  Au0  1  0.3  0.0  0.0  1.0

data_HfGe2Au
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.3
_cell_length_b   4.7
_cell_length_c   4.7
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   HfGe2Au
_chemical_formula_sum   'Hf1 Ge2 Au1'
_cell_volume   72.85
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Hf  Hf0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  2  0.65  0.33  0.65  1.0
  Au  Au2  1  0.0  0.0  0.3  1.0

Hf Ge Ge Au
HfAuGe2 crystallizes in the monoclinic Pm space group. Hf(1) is bonded in a distorted single-bond geometry to one Au(1) and four equivalent Ge(1) atoms. The Hf(1)-Au(1) bond length is 1.42 Å. There are two shorter (2.53 Å) and two longer (3.10 Å) Hf(1)-Ge(1) bond lengths. Au(1) is bonded in a distorted single-bond geometry to one Hf(1) and four equivalent Ge(1) atoms. There are two shorter (2.53 Å) and two longer (3.10 Å) Au(1)-Ge(1) bond lengths. Ge(1) is bonded in a 5-coordinate geometry to two equivalent Hf(1), two equivalent Au(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 1.63 Å.