The compound described by Pd2CuSn crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded to four equivalent Pd(2), four equivalent Cu(1), one Sn(2), one Sn(3), and two equivalent Sn(1) atoms to form distorted PdCu4Sn4Pd4 cuboctahedra that share corners with twelve equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with two equivalent Sn(2)Cu8Pd4 cuboctahedra, edges with two equivalent Sn(3)Pd12 cuboctahedra, edges with four equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra,  a faceface with one Sn(2)Cu8Pd4 cuboctahedra,  a faceface with one Sn(3)Pd12 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, and faces with six equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra. In the second Pd site, Pd(2) is bonded to two equivalent Pd(2), four equivalent Pd(1), two equivalent Cu(1), two equivalent Sn(1), and two equivalent Sn(3) atoms to form distorted PdCu2Sn4Pd6 cuboctahedra that share corners with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, corners with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with four equivalent Sn(2)Cu8Pd4 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with two equivalent Sn(3)Pd12 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, and faces with six equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra. Cu(1) is bonded to two equivalent Pd(2), four equivalent Pd(1), two equivalent Cu(1), two equivalent Sn(1), and two equivalent Sn(2) atoms to form CuCu2Sn4Pd6 cuboctahedra that share corners with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, corners with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with four equivalent Sn(3)Pd12 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with two equivalent Sn(2)Cu8Pd4 cuboctahedra, faces with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, and faces with six equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to four equivalent Pd(1), four equivalent Pd(2), and four equivalent Cu(1) atoms to form SnCu4Pd8 cuboctahedra that share corners with four equivalent Sn(1)Cu4Pd8 cuboctahedra, corners with four equivalent Sn(2)Cu8Pd4 cuboctahedra, corners with four equivalent Sn(3)Pd12 cuboctahedra, edges with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with two equivalent Sn(2)Cu8Pd4 cuboctahedra, faces with two equivalent Sn(3)Pd12 cuboctahedra, faces with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, and faces with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra. In the second Sn site, Sn(2) is bonded to four equivalent Pd(1) and eight equivalent Cu(1) atoms to form SnCu8Pd4 cuboctahedra that share corners with four equivalent Sn(3)Pd12 cuboctahedra, corners with eight equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with sixteen equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with two equivalent Sn(2)Cu8Pd4 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with four equivalent Sn(1)Cu4Pd8 cuboctahedra, and faces with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra. In the third Sn site, Sn(3) is bonded to four equivalent Pd(1) and eight equivalent Pd(2) atoms to form SnPd12 cuboctahedra that share corners with four equivalent Sn(2)Cu8Pd4 cuboctahedra, corners with eight equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with sixteen equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, faces with two equivalent Sn(3)Pd12 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with four equivalent Sn(1)Cu4Pd8 cuboctahedra, and faces with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CuSnPd2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.981
_cell_length_b   7.981
_cell_length_c   3.974
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   253.138
_cell_formula_units_Z   4
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
  Cu  Cu0  1  0.000  0.245  0.500  1.0
  Cu  Cu1  1  0.000  0.755  0.500  1.0
  Cu  Cu2  1  0.245  0.000  0.500  1.0
  Cu  Cu3  1  0.755  0.000  0.500  1.0
  Sn  Sn4  1  0.500  0.000  0.000  1.0
  Sn  Sn5  1  0.000  0.500  0.000  1.0
  Sn  Sn6  1  0.000  0.000  0.000  1.0
  Sn  Sn7  1  0.500  0.500  0.000  1.0
  Pd  Pd8  1  0.240  0.240  0.000  1.0
  Pd  Pd9  1  0.760  0.760  0.000  1.0
  Pd  Pd10  1  0.240  0.760  0.000  1.0
  Pd  Pd11  1  0.760  0.240  0.000  1.0
  Pd  Pd12  1  0.500  0.241  0.500  1.0
  Pd  Pd13  1  0.500  0.759  0.500  1.0
  Pd  Pd14  1  0.241  0.500  0.500  1.0
  Pd  Pd15  1  0.759  0.500  0.500  1.0
[/CIF]
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The compound described by Pd2CuSn crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded to four equivalent Pd(2), four equivalent Cu(1), one Sn(2), one Sn(3), and two equivalent Sn(1) atoms to form distorted PdCu4Sn4Pd4 cuboctahedra that share corners with twelve equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with two equivalent Sn(2)Cu8Pd4 cuboctahedra, edges with two equivalent Sn(3)Pd12 cuboctahedra, edges with four equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra,  a faceface with one Sn(2)Cu8Pd4 cuboctahedra,  a faceface with one Sn(3)Pd12 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, and faces with six equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra. In the second Pd site, Pd(2) is bonded to two equivalent Pd(2), four equivalent Pd(1), two equivalent Cu(1), two equivalent Sn(1), and two equivalent Sn(3) atoms to form distorted PdCu2Sn4Pd6 cuboctahedra that share corners with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, corners with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with four equivalent Sn(2)Cu8Pd4 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with two equivalent Sn(3)Pd12 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, and faces with six equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra. Cu(1) is bonded to two equivalent Pd(2), four equivalent Pd(1), two equivalent Cu(1), two equivalent Sn(1), and two equivalent Sn(2) atoms to form CuCu2Sn4Pd6 cuboctahedra that share corners with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, corners with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, edges with four equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with four equivalent Sn(3)Pd12 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with two equivalent Sn(2)Cu8Pd4 cuboctahedra, faces with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, and faces with six equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to four equivalent Pd(1), four equivalent Pd(2), and four equivalent Cu(1) atoms to form SnCu4Pd8 cuboctahedra that share corners with four equivalent Sn(1)Cu4Pd8 cuboctahedra, corners with four equivalent Sn(2)Cu8Pd4 cuboctahedra, corners with four equivalent Sn(3)Pd12 cuboctahedra, edges with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, faces with two equivalent Sn(1)Cu4Pd8 cuboctahedra, faces with two equivalent Sn(2)Cu8Pd4 cuboctahedra, faces with two equivalent Sn(3)Pd12 cuboctahedra, faces with four equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, and faces with four equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra. In the second Sn site, Sn(2) is bonded to four equivalent Pd(1) and eight equivalent Cu(1) atoms to form SnCu8Pd4 cuboctahedra that share corners with four equivalent Sn(3)Pd12 cuboctahedra, corners with eight equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with sixteen equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra, faces with two equivalent Sn(2)Cu8Pd4 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with four equivalent Sn(1)Cu4Pd8 cuboctahedra, and faces with eight equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra. In the third Sn site, Sn(3) is bonded to four equivalent Pd(1) and eight equivalent Pd(2) atoms to form SnPd12 cuboctahedra that share corners with four equivalent Sn(2)Cu8Pd4 cuboctahedra, corners with eight equivalent Sn(1)Cu4Pd8 cuboctahedra, edges with eight equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, edges with sixteen equivalent Cu(1)Cu2Sn4Pd6 cuboctahedra, faces with two equivalent Sn(3)Pd12 cuboctahedra, faces with four equivalent Pd(1)Cu4Sn4Pd4 cuboctahedra, faces with four equivalent Sn(1)Cu4Pd8 cuboctahedra, and faces with eight equivalent Pd(2)Cu2Sn4Pd6 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CuSnPd2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.981
_cell_length_b   7.981
_cell_length_c   3.974
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   253.138
_cell_formula_units_Z   4
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
  Cu  Cu0  1  0.000  0.245  0.500  1.0
  Cu  Cu1  1  0.000  0.755  0.500  1.0
  Cu  Cu2  1  0.245  0.000  0.500  1.0
  Cu  Cu3  1  0.755  0.000  0.500  1.0
  Sn  Sn4  1  0.500  0.000  0.000  1.0
  Sn  Sn5  1  0.000  0.500  0.000  1.0
  Sn  Sn6  1  0.000  0.000  0.000  1.0
  Sn  Sn7  1  0.500  0.500  0.000  1.0
  Pd  Pd8  1  0.240  0.240  0.000  1.0
  Pd  Pd9  1  0.760  0.760  0.000  1.0
  Pd  Pd10  1  0.240  0.760  0.000  1.0
  Pd  Pd11  1  0.760  0.240  0.000  1.0
  Pd  Pd12  1  0.500  0.241  0.500  1.0
  Pd  Pd13  1  0.500  0.759  0.500  1.0
  Pd  Pd14  1  0.241  0.500  0.500  1.0
  Pd  Pd15  1  0.759  0.500  0.500  1.0
[/CIF]
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