data_Li2AlGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.05
_cell_length_b   5.05
_cell_length_c   5.05
_cell_angle_alpha   134.61
_cell_angle_beta   134.61
_cell_angle_gamma   66.13
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2AlGa
_chemical_formula_sum   'Li2 Al1 Ga1'
_cell_volume   64.14
_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
  Li  Li2  1  0.0  0.95  0.11  1.0
  Li  Li3  1  0.95  0.0  0.11  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0
  Ga  Ga1  1  0.0  0.0  0.23  1.0

data_Li2AlGa
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.51
_cell_length_b   5.51
_cell_length_c   5.05
_cell_angle_alpha   90.0
_cell_angle_beta   123.07
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Li2AlGa
_chemical_formula_sum   'Li4 Al2 Ga2'
_cell_volume   128.28
_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
  Li  Li0  4  0.36  0.47  0.83  1.0
  Al  Al1  2  0.0  0.0  0.0  1.0
  Ga  Ga2  2  0.27  0.5  0.77  1.0

Li Li Al Ga
Li Li Al Ga 0 1 - + o 0 2 o + o 0 3 o + o 1 2 + o o 1 3 + o o 
Li2GaAl is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Li2GaAl clusters. Li(1) is bonded in a 3-coordinate geometry to one Li(1), one Ga(1), and one Al(1) atom. The Li(1)-Li(1) bond length is 0.29 Å. The Li(1)-Ga(1) bond length is 0.44 Å. The Li(1)-Al(1) bond length is 0.79 Å. Ga(1) is bonded in a 2-coordinate geometry to two equivalent Li(1) atoms. Al(1) is bonded in a 2-coordinate geometry to two equivalent Li(1) atoms.