data_BiPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.12
_cell_length_b   6.12
_cell_length_c   6.12
_cell_angle_alpha   34.13
_cell_angle_beta   34.13
_cell_angle_gamma   34.13
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiPb
_chemical_formula_sum   'Bi1 Pb1'
_cell_volume   64.41
_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
  Bi  Bi0  1  0.0  0.0  0.64  1.0
  Pb  Pb1  1  0.0  0.0  0.0  1.0

data_BiPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.22
_cell_length_b   3.59
_cell_length_c   6.12
_cell_angle_alpha   90.0
_cell_angle_beta   109.8
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BiPb
_chemical_formula_sum   'Bi2 Pb2'
_cell_volume   128.82
_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
  Bi  Bi0  2  0.0  0.0  0.36  1.0
  Pb  Pb1  2  0.0  0.0  0.0  1.0

Bi Pb
Bi(Pb) is alpha carbon monoxide-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two lambda2-bismuthanylidenelead molecules. Pb(1) is bonded in a single-bond geometry to one Bi(1) atom. The Pb(1)-Bi(1) bond length is 2.20 Å. Bi(1) is bonded in a single-bond geometry to one Pb(1) atom.