data_Al2Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.59
_cell_length_b   5.59
_cell_length_c   6.89
_cell_angle_alpha   104.73
_cell_angle_beta   104.73
_cell_angle_gamma   29.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2Ga
_chemical_formula_sum   'Al4 Ga2'
_cell_volume   102.93
_cell_formula_units_Z   2
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  0.79  0.0  0.01  1.0
  Al  Al1  1  0.63  0.0  0.21  1.0
  Al  Al2  1  0.36  0.0  0.43  1.0
  Al  Al3  1  0.72  0.0  0.85  1.0
  Ga  Ga4  1  0.46  0.0  0.03  1.0
  Ga  Ga5  1  0.09  0.0  0.31  1.0

data_Al2Ga
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.87
_cell_length_b   5.59
_cell_length_c   6.89
_cell_angle_alpha   104.73
_cell_angle_beta   90.0
_cell_angle_gamma   104.88
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2Ga
_chemical_formula_sum   'Al4 Ga2'
_cell_volume   102.93
_cell_formula_units_Z   2
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  0.21  0.99  1.0
  Al  Al1  1  0.0  0.28  0.15  1.0
  Al  Al2  1  0.0  0.37  0.79  1.0
  Al  Al3  1  0.0  0.64  0.57  1.0
  Ga  Ga4  1  0.0  0.54  0.97  1.0
  Ga  Ga5  1  0.0  0.91  0.69  1.0

Al Al Al Al Ga Ga
GaAl2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one GaAl2 cluster. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted single-bond geometry to one Al(1) and one Al(2) atom. The Ga(1)-Al(1) bond length is 1.86 Å. The Ga(1)-Al(2) bond length is 1.36 Å. In the second Ga site, Ga(2) is bonded in a 1-coordinate geometry to one Al(1) and one Al(3) atom. The Ga(2)-Al(1) bond length is 2.32 Å. The Ga(2)-Al(3) bond length is 1.54 Å. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a 4-coordinate geometry to one Ga(1), one Ga(2), one Al(2), and one Al(4) atom. The Al(1)-Al(2) bond length is 1.85 Å. The Al(1)-Al(4) bond length is 1.05 Å. In the second Al site, Al(2) is bonded in a single-bond geometry to one Ga(1) and one Al(1) atom. In the third Al site, Al(3) is bonded in a single-bond geometry to one Ga(2) atom. In the fourth Al site, Al(4) is bonded in a distorted single-bond geometry to one Al(1) atom.