data_Al2SiAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.12
_cell_length_b   3.54
_cell_length_c   6.06
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2SiAs
_chemical_formula_sum   'Al2 Si1 As1'
_cell_volume   67.12
_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
  Al  Al0  1  0.56  0.77  0.45  1.0
  Al  Al1  1  0.56  0.77  0.62  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  As  As2  1  0.0  0.0  0.03  1.0

data_Al2SiAs
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.12
_cell_length_b   3.54
_cell_length_c   6.06
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2SiAs
_chemical_formula_sum   'Al2 Si1 As1'
_cell_volume   67.12
_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
  Al  Al0  1  0.56  0.77  0.45  1.0
  Al  Al1  1  0.56  0.77  0.62  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  As  As3  1  0.0  0.0  0.03  1.0

Al Al Si As
(Al)2SiAs is High Pressure Cadmuum Telluride structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one dialuminium molecule and one SiAs cluster. In the SiAs cluster, Si(1) is bonded in a single-bond geometry to one As(1) atom. The Si(1)-As(1) bond length is 0.19 Å. As(1) is bonded in a single-bond geometry to one Si(1) atom.