data_AlZn2Cu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.49
_cell_length_b   5.49
_cell_length_c   5.49
_cell_angle_alpha   151.6
_cell_angle_beta   130.82
_cell_angle_gamma   57.77
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlZn2Cu
_chemical_formula_sum   'Al1 Zn2 Cu1'
_cell_volume   59.27
_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  0.03  1.0
  Zn  Zn2  1  0.0  0.0  0.42  1.0
  Zn  Zn3  1  0.35  0.0  0.4  1.0
  Cu  Cu1  1  0.0  0.29  0.39  1.0

data_AlZn2Cu
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.7
_cell_length_b   4.57
_cell_length_c   5.49
_cell_angle_alpha   114.59
_cell_angle_beta   104.2
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlZn2Cu
_chemical_formula_sum   'Al1 Zn2 Cu1'
_cell_volume   59.27
_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  0.03  0.03  1.0
  Zn  Zn1  1  0.0  0.4  0.05  1.0
  Zn  Zn2  1  0.0  0.42  0.42  1.0
  Cu  Cu3  1  0.71  0.11  0.11  1.0

Al Zn Zn Cu
CuZn2Al crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one CuZn2Al cluster. Cu(1) is bonded in a distorted single-bond geometry to one Zn(1), one Zn(2), and one Al(1) atom. The Cu(1)-Zn(1) bond length is 1.72 Å. The Cu(1)-Zn(2) bond length is 1.71 Å. The Cu(1)-Al(1) bond length is 0.98 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a distorted single-bond geometry to one Cu(1) atom. In the second Zn site, Zn(2) is bonded in a 2-coordinate geometry to one Cu(1) and one Al(1) atom. The Zn(2)-Al(1) bond length is 1.64 Å. Al(1) is bonded in a distorted single-bond geometry to one Cu(1) and one Zn(2) atom.