data_HfAl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.06
_cell_length_b   3.06
_cell_length_c   4.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfAl
_chemical_formula_sum   'Hf1 Al1'
_cell_volume   39.32
_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  Hf1  1  0.53  0.88  0.42  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0

data_HfAl
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.06
_cell_length_b   3.06
_cell_length_c   4.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfAl
_chemical_formula_sum   'Hf1 Al1'
_cell_volume   39.32
_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  Hf0  1  0.53  0.88  0.42  1.0
  Al  Al1  1  0.0  0.0  0.0  1.0

Hf Al
Hf Al 0 1 o o o 0 1 o + o 0 1 o + + 0 1 + + o 0 1 + + + 0 0 + + o 0 0 o + o 0 0 + o o 1 1 + + o 1 1 o + o 1 1 + o o 
HfAl crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one HfAl cluster. Hf(1) is bonded in a 1-coordinate geometry to one Al(1) atom. The Hf(1)-Al(1) bond length is 2.43 Å. Al(1) is bonded in a 1-coordinate geometry to one Hf(1) atom.