data_AlSn2Au
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.66
_cell_length_b   4.99
_cell_length_c   4.99
_cell_angle_alpha   60.7
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlSn2Au
_chemical_formula_sum   'Al1 Sn2 Au1'
_cell_volume   101.36
_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  0.83  1.0
  Sn  Sn2  1  0.0  0.0  0.77  1.0
  Sn  Sn3  1  0.33  0.0  0.05  1.0
  Au  Au1  1  0.33  0.0  0.02  1.0

data_AlSn2Au
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.99
_cell_length_b   8.71
_cell_length_c   4.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlSn2Au
_chemical_formula_sum   'Al2 Sn4 Au2'
_cell_volume   202.73
_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  0.17  0.0  0.0  1.0
  Sn  Sn1  2  0.23  0.0  0.0  1.0
  Sn  Sn2  2  0.45  0.5  0.67  1.0
  Au  Au3  2  0.48  0.5  0.67  1.0

Al Sn Sn Au
Al Sn Sn Au 0 1 o o o 2 3 o o o 
AuAlSn2 is Hg_xSn structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one AuAlSn2 cluster. Au(1) is bonded in a distorted single-bond geometry to one Al(1) and one Sn(2) atom. The Au(1)-Al(1) bond length is 1.79 Å. The Au(1)-Sn(2) bond length is 0.16 Å. Al(1) is bonded in a distorted bent 120 degrees geometry to one Au(1) and one Sn(1) atom. The Al(1)-Sn(1) bond length is 0.28 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a single-bond geometry to one Al(1) atom. In the second Sn site, Sn(2) is bonded in a single-bond geometry to one Au(1) atom.