data_Li2YSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.17
_cell_length_b   6.17
_cell_length_c   3.41
_cell_angle_alpha   105.45
_cell_angle_beta   105.45
_cell_angle_gamma   124.2
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2YSi
_chemical_formula_sum   'Li2 Y1 Si1'
_cell_volume   88.26
_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
  Li  Li0  1  0.47  0.27  0.4  1.0
  Li  Li1  1  0.47  0.73  0.4  1.0
  Y  Y3  1  0.89  0.0  0.0  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0

data_Li2YSi
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.41
_cell_length_b   4.75
_cell_length_c   6.17
_cell_angle_alpha   112.19
_cell_angle_beta   105.45
_cell_angle_gamma   91.48
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2YSi
_chemical_formula_sum   'Li2 Y1 Si1'
_cell_volume   88.26
_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
  Li  Li0  1  0.13  0.73  0.2  1.0
  Li  Li1  1  0.68  0.27  0.75  1.0
  Y  Y2  1  -0.0  0.0  0.89  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0

Li Li Y Si
Li2YSi is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Li2YSi cluster. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a single-bond geometry to one Si(1) atom. The Li(1)-Si(1) bond length is 2.08 Å. In the second Li site, Li(2) is bonded in a distorted single-bond geometry to one Y(1) atom. The Li(2)-Y(1) bond length is 2.02 Å. Y(1) is bonded in a single-bond geometry to one Li(2) and one Si(1) atom. The Y(1)-Si(1) bond length is 0.70 Å. Si(1) is bonded in a distorted single-bond geometry to one Li(1) and one Y(1) atom.