data_Al2GaPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.44
_cell_length_b   3.44
_cell_length_c   5.32
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2GaPt
_chemical_formula_sum   'Al2 Ga1 Pt1'
_cell_volume   62.95
_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  0.72  0.72  0.96  1.0
  Al  Al1  1  0.72  0.72  0.36  1.0
  Ga  Ga2  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.0  0.0  0.66  1.0

data_Al2GaPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   5.32
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Al2GaPt
_chemical_formula_sum   'Al4 Ga2 Pt2'
_cell_volume   125.89
_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  0.22  0.5  0.36  1.0
  Al  Al1  2  0.22  0.5  0.96  1.0
  Ga  Ga2  2  0.0  0.0  0.0  1.0
  Pt  Pt3  2  0.0  0.0  0.66  1.0

Al Al Ga Pt
Al Al Ga Pt 0 2 + + + 0 1 o o + 0 3 + + o 1 2 + + o 1 3 + + o 2 3 o o - 
PtGaAl2 is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two PtGaAl2 clusters. Pt(1) is bonded in a 3-coordinate geometry to one Ga(1), one Al(1), and one Al(2) atom. The Pt(1)-Ga(1) bond length is 1.81 Å. The Pt(1)-Al(1) bond length is 2.11 Å. The Pt(1)-Al(2) bond length is 2.11 Å. Ga(1) is bonded in a 2-coordinate geometry to one Pt(1) and one Al(1) atom. The Ga(1)-Al(1) bond length is 1.38 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 Ga(1) atom. In the second Al site, Al(2) is bonded in a distorted single-bond geometry to one Pt(1) atom.