data_HfBeGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.39
_cell_length_b   8.39
_cell_length_c   8.39
_cell_angle_alpha   20.99
_cell_angle_beta   20.99
_cell_angle_gamma   20.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfBeGe2
_chemical_formula_sum   'Hf1 Be1 Ge2'
_cell_volume   66.4
_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  0.31  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.0  0.0  0.18  1.0
  Ge  Ge2  1  0.0  0.0  0.43  1.0

data_HfBeGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.3
_cell_length_b   3.06
_cell_length_c   8.39
_cell_angle_alpha   90.0
_cell_angle_beta   102.14
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfBeGe2
_chemical_formula_sum   'Hf2 Be2 Ge4'
_cell_volume   132.81
_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
  Hf  Hf0  2  0.0  0.0  0.69  1.0
  Be  Be1  2  0.0  0.0  0.0  1.0
  Ge  Ge2  2  0.0  0.0  0.57  1.0
  Ge  Ge3  2  0.0  0.0  0.82  1.0

Hf Be Ge Ge
BeHfGe2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeHfGe2 clusters. Be(1) is bonded in a single-bond geometry to one Ge(1) atom. The Be(1)-Ge(1) bond length is 1.55 Å. Hf(1) is bonded in a linear geometry to one Ge(1) and one Ge(2) atom. The Hf(1)-Ge(1) bond length is 1.02 Å. The Hf(1)-Ge(2) bond length is 1.02 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a linear geometry to one Be(1) and one Hf(1) atom. In the second Ge site, Ge(2) is bonded in a single-bond geometry to one Hf(1) atom.