data_AlAsAu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.09
_cell_length_b   5.09
_cell_length_c   2.82
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlAsAu2
_chemical_formula_sum   'Al1 As1 Au2'
_cell_volume   72.92
_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
  As  As1  1  0.54  0.54  0.0  1.0
  Au  Au2  1  0.54  0.0  0.41  1.0
  Au  Au3  1  0.0  0.54  0.41  1.0

data_AlAsAu2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.2
_cell_length_b   7.2
_cell_length_c   2.82
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlAsAu2
_chemical_formula_sum   'Al2 As2 Au4'
_cell_volume   145.84
_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
  As  As1  2  0.04  0.5  0.0  1.0
  Au  Au2  4  0.27  0.27  0.41  1.0

Al As Au Au
Al As Au Au 0 1 - - o 0 2 - o - 0 2 - o o 0 2 o o - 0 2 o o o 0 3 o - - 0 3 o - o 0 3 o o - 0 3 o o o 0 0 o o + 1 3 o o - 1 3 o o o 1 3 + o - 1 3 + o o 1 2 o o - 1 2 o o o 1 2 o + - 1 2 o + o 1 1 o o + 2 3 + - o 2 2 o o + 3 3 o o + 
Au2AlAs crystallizes in the monoclinic Cm space group. Au(1) is bonded in a 10-coordinate geometry to two equivalent Au(1), four equivalent Al(1), and four equivalent As(1) atoms. Both Au(1)-Au(1) bond lengths are 2.82 Å. There are a spread of Au(1)-Al(1) bond distances ranging from 2.59-3.23 Å. There are a spread of Au(1)-As(1) bond distances ranging from 2.59-3.23 Å. Al(1) is bonded in a 6-coordinate geometry to eight equivalent Au(1) atoms. As(1) is bonded in a 10-coordinate geometry to eight equivalent Au(1) and two equivalent As(1) atoms. Both As(1)-As(1) bond lengths are 2.82 Å.