data_Al3In
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   3.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   109.95
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al3In
_chemical_formula_sum   'Al3 In1'
_cell_volume   77.02
_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  0.49  0.87  0.51  1.0
  Al  Al1  1  0.49  0.13  0.51  1.0
  Al  Al2  1  0.0  0.0  0.0  1.0
  In  In3  1  0.99  0.0  0.0  1.0

data_Al3In
_symmetry_space_group_name_H-M   Pm
_cell_length_a   5.2
_cell_length_b   3.03
_cell_length_c   5.2
_cell_angle_alpha   90.0
_cell_angle_beta   109.95
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Al3In
_chemical_formula_sum   'Al3 In1'
_cell_volume   77.02
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Al  Al1  1  0.49  0.5  0.13  1.0
  Al  Al2  1  0.49  0.5  0.87  1.0
  In  In3  1  0.99  0.0  0.0  1.0

Al Al Al In
InAl(Al)2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one aluminium--indium (1/1) molecule and one dialuminium molecule.