data_Re2GeBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.56
_cell_length_b   8.56
_cell_length_c   8.56
_cell_angle_alpha   19.98
_cell_angle_beta   19.98
_cell_angle_gamma   19.98
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Re2GeBr
_chemical_formula_sum   'Re2 Ge1 Br1'
_cell_volume   64.14
_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  Re2  1  0.0  0.0  0.4  1.0
  Re  Re3  1  0.0  0.0  0.77  1.0
  Ge  Ge1  1  0.0  0.0  0.0  1.0
  Br  Br0  1  0.0  0.0  0.59  1.0

data_Re2GeBr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.15
_cell_length_b   2.97
_cell_length_c   8.56
_cell_angle_alpha   90.0
_cell_angle_beta   101.56
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Re2GeBr
_chemical_formula_sum   'Re4 Ge2 Br2'
_cell_volume   128.28
_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  2  -0.0  0.0  0.6  1.0
  Re  Re1  2  -0.0  0.0  0.23  1.0
  Ge  Ge2  2  0.0  0.0  0.0  1.0
  Br  Br3  2  -0.0  0.0  0.41  1.0

Re Re Ge Br
Re Re Ge Br 0 3 o o o 1 3 o o o 1 2 o o + 
Re2GeBr is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Re2GeBr clusters. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded in a single-bond geometry to one Br(1) atom. The Re(1)-Br(1) bond length is 1.58 Å. In the second Re site, Re(2) is bonded in a distorted single-bond geometry to one Ge(1) and one Br(1) atom. The Re(2)-Ge(1) bond length is 1.97 Å. The Re(2)-Br(1) bond length is 1.58 Å. Ge(1) is bonded in a single-bond geometry to one Re(2) atom. Br(1) is bonded in a linear geometry to one Re(1) and one Re(2) atom.