data_ScSi2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.53
_cell_length_b   3.53
_cell_length_c   6.48
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ScSi2Pb
_chemical_formula_sum   'Sc1 Si2 Pb1'
_cell_volume   80.88
_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  Sc1  1  0.0  0.0  0.15  1.0
  Si  Si2  1  0.77  0.77  0.19  1.0
  Si  Si3  1  0.0  0.0  0.27  1.0
  Pb  Pb0  1  0.77  0.77  0.11  1.0

data_ScSi2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   6.48
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ScSi2Pb
_chemical_formula_sum   'Sc2 Si4 Pb2'
_cell_volume   161.77
_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  2  0.0  0.0  0.15  1.0
  Si  Si1  2  0.0  0.0  0.27  1.0
  Si  Si2  2  0.27  0.5  0.19  1.0
  Pb  Pb3  2  0.27  0.5  0.11  1.0

Sc Si Si Pb
Sc Si Si Pb 0 2 o o o 1 3 o o o 
ScSiPbSi crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two PbSi clusters and two ScSi clusters. In each PbSi cluster, Pb(1) is bonded in a single-bond geometry to one Si(1) atom. The Pb(1)-Si(1) bond length is 0.48 Å. Si(1) is bonded in a single-bond geometry to one Pb(1) atom. In each ScSi cluster, Sc(1) is bonded in a distorted single-bond geometry to one Si(2) atom. The Sc(1)-Si(2) bond length is 0.79 Å. Si(2) is bonded in a single-bond geometry to one Sc(1) atom.