data_VPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.68
_cell_length_b   5.68
_cell_length_c   5.68
_cell_angle_alpha   103.44
_cell_angle_beta   103.44
_cell_angle_gamma   122.35
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VPb2
_chemical_formula_sum   'V2 Pb4'
_cell_volume   135.76
_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
  V  V4  1  0.0  0.0  0.37  1.0
  V  V5  1  0.0  0.0  0.11  1.0
  Pb  Pb0  1  0.16  0.36  0.74  1.0
  Pb  Pb1  1  0.36  0.16  0.0  1.0
  Pb  Pb2  1  0.16  0.68  0.0  1.0
  Pb  Pb3  1  0.36  0.84  0.74  1.0

data_VPb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.48
_cell_length_b   5.68
_cell_length_c   5.68
_cell_angle_alpha   76.56
_cell_angle_beta   61.18
_cell_angle_gamma   61.18
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VPb2
_chemical_formula_sum   'V2 Pb4'
_cell_volume   135.76
_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
  V  V0  1  0.0  0.0  0.63  1.0
  V  V1  1  0.0  0.0  0.89  1.0
  Pb  Pb2  1  0.16  0.21  -0.0  1.0
  Pb  Pb3  1  0.36  0.79  0.26  1.0
  Pb  Pb4  1  0.68  0.48  -0.0  1.0
  Pb  Pb5  1  0.84  0.52  0.26  1.0

V V Pb Pb Pb Pb
V V Pb Pb Pb Pb 0 1 o o o 0 2 o o o 1 3 o o o 1 4 o - o 2 5 o o o 2 4 o o + 3 5 o - - 3 4 o - o 4 5 o o - 
VPb2 crystallizes in the triclinic P1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 2-coordinate geometry to one V(2), one Pb(1), and one Pb(4) atom. The V(1)-V(2) bond length is 1.48 Å. The V(1)-Pb(1) bond length is 2.15 Å. The V(1)-Pb(4) bond length is 3.21 Å. In the second V site, V(2) is bonded in a 4-coordinate geometry to one V(1), one Pb(2), one Pb(3), and one Pb(4) atom. The V(2)-Pb(2) bond length is 2.08 Å. The V(2)-Pb(3) bond length is 2.46 Å. The V(2)-Pb(4) bond length is 3.23 Å. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted single-bond geometry to one V(1), one Pb(3), and one Pb(4) atom. The Pb(1)-Pb(3) bond length is 2.03 Å. The Pb(1)-Pb(4) bond length is 2.32 Å. In the second Pb site, Pb(2) is bonded in a distorted single-bond geometry to one V(2) and one Pb(4) atom. The Pb(2)-Pb(4) bond length is 2.03 Å. In the third Pb site, Pb(3) is bonded in a 2-coordinate geometry to one V(2), one Pb(1), and one Pb(4) atom. The Pb(3)-Pb(4) bond length is 2.18 Å. In the fourth Pb site, Pb(4) is bonded in a 5-coordinate geometry to one V(1), one V(2), one Pb(1), one Pb(2), and one Pb(3) atom.