data_TiAlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.18
_cell_length_b   5.18
_cell_length_c   5.18
_cell_angle_alpha   144.73
_cell_angle_beta   144.73
_cell_angle_gamma   50.74
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TiAlSi
_chemical_formula_sum   'Ti1 Al1 Si1'
_cell_volume   45.98
_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
  Ti  Ti2  1  0.0  0.0  0.27  1.0
  Al  Al0  1  0.0  0.0  0.29  1.0
  Si  Si1  1  0.0  0.0  0.14  1.0

data_TiAlSi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.43
_cell_length_b   4.43
_cell_length_c   5.18
_cell_angle_alpha   90.0
_cell_angle_beta   115.37
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TiAlSi
_chemical_formula_sum   'Ti2 Al2 Si2'
_cell_volume   91.97
_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
  Ti  Ti0  2  0.27  0.0  0.27  1.0
  Al  Al1  2  0.29  0.0  0.29  1.0
  Si  Si2  2  0.14  0.0  0.14  1.0

Ti Al Si
TiAlSi is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two TiAlSi clusters. Ti(1) is bonded in a linear geometry to one Al(1) and one Si(1) atom. The Ti(1)-Al(1) bond length is 0.08 Å. The Ti(1)-Si(1) bond length is 0.69 Å. Al(1) is bonded in a single-bond geometry to one Ti(1) atom. Si(1) is bonded in a single-bond geometry to one Ti(1) atom.