data_Sc2AlPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.52
_cell_length_b   4.52
_cell_length_c   4.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sc2AlPb
_chemical_formula_sum   'Sc2 Al1 Pb1'
_cell_volume   87.3
_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
  Sc  Sc2  1  0.26  0.0  0.14  1.0
  Sc  Sc3  1  0.0  0.26  0.14  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0
  Pb  Pb1  1  0.26  0.26  0.0  1.0

data_Sc2AlPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.39
_cell_length_b   6.39
_cell_length_c   4.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sc2AlPb
_chemical_formula_sum   'Sc4 Al2 Pb2'
_cell_volume   174.6
_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
  Sc  Sc0  4  0.13  0.13  0.14  1.0
  Al  Al1  2  0.0  0.0  0.0  1.0
  Pb  Pb2  2  0.26  0.0  0.0  1.0

Sc Sc Al Pb
Sc2AlPb is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Sc2AlPb clusters. Sc(1) is bonded in a 2-coordinate geometry to one Al(1) and one Pb(1) atom. The Sc(1)-Al(1) bond length is 1.31 Å. The Sc(1)-Pb(1) bond length is 1.31 Å. Al(1) is bonded in a 2-coordinate geometry to two equivalent Sc(1) atoms. Pb(1) is bonded in a 2-coordinate geometry to two equivalent Sc(1) atoms.