data_SrAl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.27
_cell_length_b   4.27
_cell_length_c   9.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrAl
_chemical_formula_sum   'Sr2 Al2'
_cell_volume   149.51
_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
  Sr  Sr2  1  0.14  0.23  0.89  1.0
  Sr  Sr3  1  0.0  0.47  0.56  1.0
  Al  Al0  1  0.14  0.23  0.9  1.0
  Al  Al1  1  0.0  0.47  0.55  1.0

data_SrAl
_symmetry_space_group_name_H-M   P-1
_cell_length_a   4.27
_cell_length_b   4.27
_cell_length_c   9.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   SrAl
_chemical_formula_sum   'Sr2 Al2'
_cell_volume   149.51
_cell_formula_units_Z   2
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
  Sr  Sr0  2  0.07  0.88  0.66  1.0
  Al  Al1  2  0.07  0.88  0.67  1.0

Sr Sr Al Al
Sr Sr Al Al 0 2 o o o 1 3 o o o 
AlSr is alpha carbon monoxide-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two aluminum;strontium molecules. Sr(1) is bonded in a single-bond geometry to one Al(1) atom. The Sr(1)-Al(1) bond length is 0.08 Å. Al(1) is bonded in a single-bond geometry to one Sr(1) atom.