data_SiNi2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.03
_cell_length_b   5.03
_cell_length_c   5.03
_cell_angle_alpha   135.91
_cell_angle_beta   135.91
_cell_angle_gamma   64.11
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiNi2Pb
_chemical_formula_sum   'Si1 Ni2 Pb1'
_cell_volume   60.64
_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
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ni  Ni0  1  0.89  0.0  0.13  1.0
  Ni  Ni1  1  0.0  0.0  0.26  1.0
  Pb  Pb2  1  0.0  0.89  0.13  1.0

data_SiNi2Pb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.77
_cell_length_b   3.77
_cell_length_c   5.03
_cell_angle_alpha   112.04
_cell_angle_beta   112.04
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiNi2Pb
_chemical_formula_sum   'Si1 Ni2 Pb1'
_cell_volume   60.64
_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
  Si  Si0  1  0.0  0.0  0.0  1.0
  Ni  Ni1  1  0.74  0.0  0.74  1.0
  Ni  Ni2  1  0.87  0.0  0.76  1.0
  Pb  Pb3  1  0.76  0.89  0.76  1.0

Si Ni Ni Pb
Ni2PbSi is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Ni2PbSi cluster. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to one Ni(2), one Pb(1), and one Si(1) atom. The Ni(1)-Ni(2) bond length is 0.47 Å. The Ni(1)-Pb(1) bond length is 0.61 Å. The Ni(1)-Si(1) bond length is 1.14 Å. In the second Ni site, Ni(2) is bonded in a distorted single-bond geometry to one Ni(1) and one Pb(1) atom. The Ni(2)-Pb(1) bond length is 0.47 Å. Pb(1) is bonded in a 3-coordinate geometry to one Ni(1), one Ni(2), and one Si(1) atom. The Pb(1)-Si(1) bond length is 1.14 Å. Si(1) is bonded in a 2-coordinate geometry to one Ni(1) and one Pb(1) atom.