data_Al2ZnPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.56
_cell_length_b   8.56
_cell_length_c   8.56
_cell_angle_alpha   19.75
_cell_angle_beta   19.75
_cell_angle_gamma   19.75
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2ZnPt
_chemical_formula_sum   'Al2 Zn1 Pt1'
_cell_volume   62.55
_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  0.2  1.0
  Al  Al1  1  0.0  0.0  0.96  1.0
  Zn  Zn3  1  0.0  0.0  0.0  1.0
  Pt  Pt2  1  0.0  0.0  0.58  1.0

data_Al2ZnPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.08
_cell_length_b   2.93
_cell_length_c   8.56
_cell_angle_alpha   90.0
_cell_angle_beta   101.42
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Al2ZnPt
_chemical_formula_sum   'Al4 Zn2 Pt2'
_cell_volume   125.1
_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  0.04  1.0
  Al  Al1  2  0.0  0.0  0.8  1.0
  Zn  Zn2  2  0.0  0.0  0.0  1.0
  Pt  Pt3  2  -0.0  0.0  0.42  1.0

Al Al Zn Pt
Al Al Zn Pt 0 2 o o o 0 1 o o - 0 3 o o o 1 2 o o + 1 3 o o o 3 3 o + - 3 3 + - o 3 3 + o - 
PtZnAl2 crystallizes in the monoclinic Cm space group. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to six Pt(1,1); one Al(1); and one Al(2) atom to form a mixture of distorted corner and edge-sharing PtAl2Pt6 hexagonal bipyramids. All Pt(1)-Pt(1,1) bond lengths are 2.93 Å. The Pt(1)-Al(1) bond length is 3.23 Å. The Pt(1)-Al(2) bond length is 3.23 Å. In the second Pt site, Pt(1) is bonded to six Pt(1,1); one Al(1); and one Al(2) atom to form a mixture of distorted corner and edge-sharing PtAl2Pt6 hexagonal bipyramids. Both Pt(1)-Pt(1) bond lengths are 2.93 Å. The Pt(1)-Al(1) bond length is 3.23 Å. The Pt(1)-Al(2) bond length is 3.23 Å. Zn(1) is bonded in a distorted single-bond geometry to one Al(1) and one Al(2) atom. The Zn(1)-Al(1) bond length is 1.74 Å. The Zn(1)-Al(2) bond length is 0.36 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted single-bond geometry to one Pt(1) and one Zn(1) atom. In the second Al site, Al(2) is bonded in a single-bond geometry to one Pt(1) and one Zn(1) atom.