data_HfGeBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.69
_cell_length_b   9.69
_cell_length_c   9.69
_cell_angle_alpha   20.24
_cell_angle_beta   20.24
_cell_angle_gamma   20.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfGeBr2
_chemical_formula_sum   'Hf1 Ge1 Br2'
_cell_volume   95.24
_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  0.46  1.0
  Ge  Ge2  1  0.0  0.0  0.07  1.0
  Br  Br0  1  0.0  0.0  0.58  1.0
  Br  Br1  1  0.0  0.0  0.6  1.0

data_HfGeBr2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.9
_cell_length_b   3.4
_cell_length_c   9.69
_cell_angle_alpha   90.0
_cell_angle_beta   101.7
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfGeBr2
_chemical_formula_sum   'Hf2 Ge2 Br4'
_cell_volume   190.49
_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  0.54  1.0
  Ge  Ge1  2  0.0  0.0  0.93  1.0
  Br  Br2  2  0.0  0.0  0.4  1.0
  Br  Br3  2  0.0  0.0  0.42  1.0

Hf Ge Br Br
Hf Ge Br Br 0 3 o o o 0 2 o o o 0 1 o o o 1 1 o + - 1 1 + - o 1 1 + o - 2 3 o o o 
HfBr2Ge crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two 7440-56-4 atoms and two HfBr2 clusters. In each HfBr2 cluster, Hf(1) is bonded in a single-bond geometry to one Br(1) atom. The Hf(1)-Br(1) bond length is 1.17 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a linear geometry to one Hf(1) and one Br(2) atom. The Br(1)-Br(2) bond length is 0.19 Å. In the second Br site, Br(2) is bonded in a single-bond geometry to one Br(1) atom.