data_AlSbPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.4
_cell_length_b   3.4
_cell_length_c   9.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   95.1
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlSbPb2
_chemical_formula_sum   'Al1 Sb1 Pb2'
_cell_volume   110.35
_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
  Al  Al0  1  0.0  0.0  0.0  1.0
  Sb  Sb3  1  0.0  0.0  0.8  1.0
  Pb  Pb1  1  0.29  0.0  0.13  1.0
  Pb  Pb2  1  0.29  0.0  0.47  1.0

data_AlSbPb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.4
_cell_length_b   3.4
_cell_length_c   9.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   95.1
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlSbPb2
_chemical_formula_sum   'Al1 Sb1 Pb2'
_cell_volume   110.35
_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
  Al  Al0  1  0.0  0.0  0.0  1.0
  Sb  Sb1  1  0.0  0.0  0.8  1.0
  Pb  Pb2  1  0.29  0.0  0.13  1.0
  Pb  Pb3  1  0.29  0.0  0.47  1.0

Al Sb Pb Pb
Al Sb Pb Pb 0 1 o o - 0 2 o o o 1 3 o o o 2 3 o o o 3 3 o + o 3 3 + o o 
AlPb2Sb crystallizes in the triclinic P1 space group. Al(1) is bonded in a 3-coordinate geometry to two equivalent Pb(1) and one Sb(1) atom. There is one shorter (1.63 Å) and one longer (2.73 Å) Al(1)-Pb(1) bond length. The Al(1)-Sb(1) bond length is 1.90 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted single-bond geometry to two equivalent Al(1) and one Pb(2) atom. The Pb(1)-Pb(2) bond length is 3.21 Å. In the second Pb site, Pb(2) is bonded to one Pb(1), four equivalent Pb(2), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing PbSbPb5 octahedra. The corner-sharing octahedra are not tilted. All Pb(2)-Pb(2) bond lengths are 3.40 Å. The Pb(2)-Sb(1) bond length is 3.35 Å. Sb(1) is bonded in a single-bond geometry to one Al(1) and one Pb(2) atom.