data_GePb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.99
_cell_length_b   5.99
_cell_length_c   5.99
_cell_angle_alpha   47.94
_cell_angle_beta   47.94
_cell_angle_gamma   47.94
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GePb
_chemical_formula_sum   'Ge2 Pb2'
_cell_volume   108.62
_cell_formula_units_Z   2
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
  Ge  Ge0  1  0.0  0.0  0.12  1.0
  Ge  Ge1  1  0.0  0.0  0.76  1.0
  Pb  Pb2  1  0.0  0.0  0.73  1.0
  Pb  Pb3  1  0.0  0.0  0.14  1.0

data_GePb
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   8.43
_cell_length_b   4.87
_cell_length_c   5.99
_cell_angle_alpha   90.0
_cell_angle_beta   117.98
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   GePb
_chemical_formula_sum   'Ge4 Pb4'
_cell_volume   217.25
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-x, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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
  Ge  Ge0  4  0.0  0.0  0.32  1.0
  Pb  Pb1  4  0.0  0.0  0.3  1.0

Ge Ge Pb Pb
GePb is beta oxygen structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of four germanium;lead molecules. Pb(1) is bonded in a single-bond geometry to one Ge(1) atom. The Pb(1)-Ge(1) bond length is 0.14 Å. Ge(1) is bonded in a single-bond geometry to one Pb(1) atom.