data_HfAl2Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.07
_cell_length_b   4.07
_cell_length_c   4.11
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfAl2Ga
_chemical_formula_sum   'Hf1 Al2 Ga1'
_cell_volume   68.16
_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
  Hf  Hf3  1  0.04  0.04  0.0  1.0
  Al  Al0  1  0.04  0.0  0.05  1.0
  Al  Al1  1  0.0  0.04  0.05  1.0
  Ga  Ga2  1  0.0  0.0  0.0  1.0

data_HfAl2Ga
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.76
_cell_length_b   5.76
_cell_length_c   4.11
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HfAl2Ga
_chemical_formula_sum   'Hf2 Al4 Ga2'
_cell_volume   136.33
_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
  Hf  Hf0  2  0.04  0.0  0.0  1.0
  Al  Al1  4  0.02  0.02  0.05  1.0
  Ga  Ga2  2  0.0  0.0  0.0  1.0

Hf Al Al Ga
HfGaAl2 is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two HfGaAl2 clusters. Hf(1) is bonded in a 3-coordinate geometry to one Ga(1) and two equivalent Al(1) atoms. The Hf(1)-Ga(1) bond length is 0.21 Å. Both Hf(1)-Al(1) bond lengths are 0.27 Å. Ga(1) is bonded in a 3-coordinate geometry to one Hf(1) and two equivalent Al(1) atoms. Both Ga(1)-Al(1) bond lengths are 0.27 Å. Al(1) is bonded in a 3-coordinate geometry to one Hf(1), one Ga(1), and one Al(1) atom. The Al(1)-Al(1) bond length is 0.21 Å.