data_Co3Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.85
_cell_length_b   4.85
_cell_length_c   4.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co3Pb
_chemical_formula_sum   'Co6 Pb2'
_cell_volume   114.09
_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
  Co  Co0  1  0.21  0.0  0.43  1.0
  Co  Co1  1  0.64  0.0  0.43  1.0
  Co  Co2  1  0.43  0.21  0.0  1.0
  Co  Co3  1  0.43  0.64  0.0  1.0
  Co  Co4  1  0.0  0.43  0.64  1.0
  Co  Co5  1  0.0  0.43  0.21  1.0
  Pb  Pb6  1  0.43  0.43  0.43  1.0
  Pb  Pb7  1  0.0  0.0  0.0  1.0

data_Co3Pb
_symmetry_space_group_name_H-M   R3
_cell_length_a   6.86
_cell_length_b   6.86
_cell_length_c   8.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   146
_chemical_formula_structural   Co3Pb
_chemical_formula_sum   'Co18 Pb6'
_cell_volume   342.26
_cell_formula_units_Z   6
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  'x+1/3, y+2/3, z+2/3'
  5  '-y+1/3, x-y+2/3, z+2/3'
  6  '-x+y+1/3, -x+2/3, z+2/3'
  7  'x+2/3, y+1/3, z+1/3'
  8  '-y+2/3, x-y+1/3, z+1/3'
  9  '-x+y+2/3, -x+1/3, z+1/3'
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
  Co  Co0  9  0.07  0.35  0.35  1.0
  Co  Co1  9  0.12  0.67  0.88  1.0
  Pb  Pb2  3  0.0  0.0  0.0  1.0
  Pb  Pb3  3  0.0  0.0  0.43  1.0

Co Co Co Co Co Co Pb Pb
Co Co Co Co Co Co Pb Pb 0 7 o o o 0 5 o o o 0 4 o o o 0 2 o o o 0 6 o o o 0 1 o o o 1 2 o o o 1 6 o o o 1 7 + o o 2 7 o o o 2 5 o o o 2 6 o o o 2 3 o o o 3 5 o o o 3 6 o o o 3 7 o + o 4 6 o o o 4 5 o o o 4 7 o o + 5 7 o o o 5 6 o o o 
Co3Pb is beta Plutonium-derived structured and crystallizes in the trigonal R3 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 3-coordinate geometry to one Co(2), two equivalent Pb(1), and two equivalent Pb(2) atoms. The Co(1)-Co(2) bond length is 2.06 Å. There is one shorter (2.30 Å) and one longer (2.97 Å) Co(1)-Pb(1) bond length. There is one shorter (2.30 Å) and one longer (2.97 Å) Co(1)-Pb(2) bond length. In the second Co site, Co(2) is bonded in a 3-coordinate geometry to one Co(1), two equivalent Pb(1), and two equivalent Pb(2) atoms. There is one shorter (2.30 Å) and one longer (2.97 Å) Co(2)-Pb(1) bond length. There is one shorter (2.71 Å) and one longer (3.30 Å) Co(2)-Pb(2) bond length. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 12-coordinate geometry to six equivalent Co(1) and six equivalent Co(2) atoms. In the second Pb site, Pb(2) is bonded in a 12-coordinate geometry to six equivalent Co(1) and six equivalent Co(2) atoms.