data_Re2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.14
_cell_length_b   4.14
_cell_length_c   4.14
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Re2Ge
_chemical_formula_sum   'Re2 Ge1'
_cell_volume   50.19
_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  Re1  1  0.46  0.46  0.46  1.0
  Re  Re2  1  0.39  0.39  0.39  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0

data_Re2Ge
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.14
_cell_length_b   4.14
_cell_length_c   10.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Re2Ge
_chemical_formula_sum   'Re6 Ge3'
_cell_volume   150.57
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.54  1.0
  Re  Re1  3  0.0  0.0  0.61  1.0
  Ge  Ge2  3  0.0  0.0  0.0  1.0

Re Re Ge
Re2Ge crystallizes in the trigonal R3m space group. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded in a single-bond geometry to one Re(2) and six equivalent Ge(1) atoms. The Re(1)-Re(2) bond length is 0.73 Å. There are three shorter (2.73 Å) and three longer (3.15 Å) Re(1)-Ge(1) bond lengths. In the second Re site, Re(2) is bonded in a distorted single-bond geometry to one Re(1) and three equivalent Ge(1) atoms. All Re(2)-Ge(1) bond lengths are 2.46 Å. Ge(1) is bonded in a 9-coordinate geometry to three equivalent Re(2) and six equivalent Re(1) atoms.