data_VCoPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.37
_cell_length_b   3.37
_cell_length_c   6.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VCoPb2
_chemical_formula_sum   'V1 Co1 Pb2'
_cell_volume   77.7
_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
  V  V3  1  0.0  0.0  0.0  1.0
  Co  Co0  1  0.0  0.0  0.42  1.0
  Pb  Pb1  1  0.68  0.68  0.04  1.0
  Pb  Pb2  1  0.68  0.68  0.81  1.0

data_VCoPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   6.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   VCoPb2
_chemical_formula_sum   'V2 Co2 Pb4'
_cell_volume   155.41
_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
  V  V0  2  0.0  0.0  0.0  1.0
  Co  Co1  2  0.0  0.0  0.42  1.0
  Pb  Pb2  2  0.18  0.5  0.04  1.0
  Pb  Pb3  2  0.18  0.5  0.81  1.0

V Co Pb Pb
VCoPb2 crystallizes in the monoclinic Cm space group. V(1) is bonded in a distorted single-bond geometry to one Co(1), one Pb(1), and three equivalent Pb(2) atoms. The V(1)-Co(1) bond length is 2.90 Å. The V(1)-Pb(1) bond length is 1.53 Å. There is one shorter (2.00 Å) and two longer (2.86 Å) V(1)-Pb(2) bond lengths. Co(1) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Pb(2) atom. The Co(1)-Pb(1) bond length is 3.03 Å. The Co(1)-Pb(2) bond length is 3.03 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted single-bond geometry to one V(1), one Co(1), and one Pb(2) atom. The Pb(1)-Pb(2) bond length is 1.59 Å. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to three equivalent V(1), one Co(1), and one Pb(1) atom.