The compound described by In2PbSn crystallizes in the tetragonal P4mm space group. There are two inequivalent In sites. In the first In site, In(1) is bonded to four equivalent In(1), four equivalent In(2), and four equivalent Sn(1) atoms to form distorted InIn8Sn4 cuboctahedra that share corners with four equivalent In(1)In8Sn4 cuboctahedra, corners with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent Pb(1)In4Sn4Pb4 cuboctahedra, faces with four equivalent In(2)In8Pb4 cuboctahedra, faces with four equivalent Sn(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent In(1)In8Sn4 cuboctahedra. In the second In site, In(2) is bonded to four equivalent In(1), four equivalent In(2), and four equivalent Pb(1) atoms to form distorted InIn8Pb4 cuboctahedra that share corners with four equivalent In(2)In8Pb4 cuboctahedra, corners with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with four equivalent In(1)In8Sn4 cuboctahedra, faces with four equivalent Pb(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent In(2)In8Pb4 cuboctahedra. Pb(1) is bonded to four equivalent In(2), four equivalent Pb(1), and four equivalent Sn(1) atoms to form PbIn4Sn4Pb4 cuboctahedra that share corners with four equivalent Pb(1)In4Sn4Pb4 cuboctahedra, corners with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent In(1)In8Sn4 cuboctahedra, faces with four equivalent In(2)In8Pb4 cuboctahedra, faces with four equivalent Sn(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra. Sn(1) is bonded to four equivalent In(1), four equivalent Pb(1), and four equivalent Sn(1) atoms to form SnIn4Sn4Pb4 cuboctahedra that share corners with four equivalent Sn(1)In4Sn4Pb4 cuboctahedra, corners with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent In(2)In8Pb4 cuboctahedra, faces with four equivalent In(1)In8Sn4 cuboctahedra, faces with four equivalent Pb(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_In2SnPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.305
_cell_length_b   3.305
_cell_length_c   10.608
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   115.860
_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
  In  In0  1  0.000  0.000  0.499  1.0
  In  In1  1  0.500  0.500  0.747  1.0
  Sn  Sn2  1  0.500  0.500  0.252  1.0
  Pb  Pb3  1  0.000  0.000  0.002  1.0
[/CIF]
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The compound described by In2PbSn crystallizes in the tetragonal P4mm space group. There are two inequivalent In sites. In the first In site, In(1) is bonded to four equivalent In(1), four equivalent In(2), and four equivalent Sn(1) atoms to form distorted InIn8Sn4 cuboctahedra that share corners with four equivalent In(1)In8Sn4 cuboctahedra, corners with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent Pb(1)In4Sn4Pb4 cuboctahedra, faces with four equivalent In(2)In8Pb4 cuboctahedra, faces with four equivalent Sn(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent In(1)In8Sn4 cuboctahedra. In the second In site, In(2) is bonded to four equivalent In(1), four equivalent In(2), and four equivalent Pb(1) atoms to form distorted InIn8Pb4 cuboctahedra that share corners with four equivalent In(2)In8Pb4 cuboctahedra, corners with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, edges with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with four equivalent In(1)In8Sn4 cuboctahedra, faces with four equivalent Pb(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent In(2)In8Pb4 cuboctahedra. Pb(1) is bonded to four equivalent In(2), four equivalent Pb(1), and four equivalent Sn(1) atoms to form PbIn4Sn4Pb4 cuboctahedra that share corners with four equivalent Pb(1)In4Sn4Pb4 cuboctahedra, corners with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent In(1)In8Sn4 cuboctahedra, faces with four equivalent In(2)In8Pb4 cuboctahedra, faces with four equivalent Sn(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra. Sn(1) is bonded to four equivalent In(1), four equivalent Pb(1), and four equivalent Sn(1) atoms to form SnIn4Sn4Pb4 cuboctahedra that share corners with four equivalent Sn(1)In4Sn4Pb4 cuboctahedra, corners with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent In(2)In8Pb4 cuboctahedra, edges with eight equivalent In(1)In8Sn4 cuboctahedra, edges with eight equivalent Pb(1)In4Sn4Pb4 cuboctahedra, faces with two equivalent In(2)In8Pb4 cuboctahedra, faces with four equivalent In(1)In8Sn4 cuboctahedra, faces with four equivalent Pb(1)In4Sn4Pb4 cuboctahedra, and faces with eight equivalent Sn(1)In4Sn4Pb4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_In2SnPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.305
_cell_length_b   3.305
_cell_length_c   10.608
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   115.860
_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
  In  In0  1  0.000  0.000  0.499  1.0
  In  In1  1  0.500  0.500  0.747  1.0
  Sn  Sn2  1  0.500  0.500  0.252  1.0
  Pb  Pb3  1  0.000  0.000  0.002  1.0
[/CIF]
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