data_AlCu2Pd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.12
_cell_length_b   3.12
_cell_length_c   5.56
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlCu2Pd
_chemical_formula_sum   'Al1 Cu2 Pd1'
_cell_volume   54.01
_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
  Al  Al0  1  0.0  0.0  0.0  1.0
  Cu  Cu1  1  0.56  0.56  0.33  1.0
  Cu  Cu2  1  0.56  0.56  0.24  1.0
  Pd  Pd3  1  0.0  0.0  0.78  1.0

data_AlCu2Pd
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.41
_cell_length_b   4.41
_cell_length_c   5.56
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlCu2Pd
_chemical_formula_sum   'Al2 Cu4 Pd2'
_cell_volume   108.02
_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
  Al  Al0  2  0.0  0.0  0.0  1.0
  Cu  Cu1  2  0.06  0.5  0.24  1.0
  Cu  Cu2  2  0.06  0.5  0.33  1.0
  Pd  Pd3  2  0.0  0.0  0.78  1.0

Al Cu Cu Pd
Al Cu Cu Pd 0 3 o o - 1 2 o o o 
(Cu)2PdAl is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Cu clusters and two PdAl clusters. In each Cu cluster, there are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a single-bond geometry to one Cu(2) atom. The Cu(1)-Cu(2) bond length is 0.49 Å. In the second Cu site, Cu(2) is bonded in a distorted single-bond geometry to one Cu(1) atom. In each PdAl cluster, Pd(1) is bonded in a single-bond geometry to one Al(1) atom. The Pd(1)-Al(1) bond length is 1.21 Å. Al(1) is bonded in a distorted single-bond geometry to one Pd(1) atom.