data_ReGe2Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.31
_cell_length_b   4.31
_cell_length_c   4.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ReGe2Bi
_chemical_formula_sum   'Re1 Ge2 Bi1'
_cell_volume   79.61
_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  Re3  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.16  0.0  0.14  1.0
  Ge  Ge2  1  0.0  0.16  0.14  1.0
  Bi  Bi0  1  0.16  0.16  0.0  1.0

data_ReGe2Bi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.1
_cell_length_b   6.1
_cell_length_c   4.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ReGe2Bi
_chemical_formula_sum   'Re2 Ge4 Bi2'
_cell_volume   159.23
_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  0.0  1.0
  Ge  Ge1  4  0.08  0.08  0.14  1.0
  Bi  Bi2  2  0.16  0.0  0.0  1.0

Re Ge Ge Bi
ReGe2Bi is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two ReGe2Bi clusters. Re(1) is bonded in a 3-coordinate geometry to two equivalent Ge(1) and one Bi(1) atom. Both Re(1)-Ge(1) bond lengths are 0.90 Å. The Re(1)-Bi(1) bond length is 0.96 Å. Ge(1) is bonded in a 3-coordinate geometry to one Re(1), one Ge(1), and one Bi(1) atom. The Ge(1)-Ge(1) bond length is 0.96 Å. The Ge(1)-Bi(1) bond length is 0.90 Å. Bi(1) is bonded in a 3-coordinate geometry to one Re(1) and two equivalent Ge(1) atoms.