data_Li2LaSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.56
_cell_length_b   3.56
_cell_length_c   6.64
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li2LaSi
_chemical_formula_sum   'Li2 La1 Si1'
_cell_volume   84.21
_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  Li1  1  0.78  0.78  0.43  1.0
  Li  Li2  1  0.78  0.78  0.22  1.0
  La  La0  1  0.0  0.0  0.32  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0

data_Li2LaSi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.04
_cell_length_b   5.04
_cell_length_c   6.64
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Li2LaSi
_chemical_formula_sum   'Li4 La2 Si2'
_cell_volume   168.43
_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
  Li  Li0  2  0.28  0.5  0.22  1.0
  Li  Li1  2  0.28  0.5  0.43  1.0
  La  La2  2  0.0  0.0  0.32  1.0
  Si  Si3  2  0.0  0.0  0.0  1.0

Li Li La Si
Li2LaSi is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Li2LaSi clusters. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 2-coordinate geometry to one Li(2) and one La(1) atom. The Li(1)-Li(2) bond length is 1.39 Å. The Li(1)-La(1) bond length is 1.31 Å. In the second Li site, Li(2) is bonded in a 3-coordinate geometry to one Li(1), one La(1), and one Si(1) atom. The Li(2)-La(1) bond length is 1.31 Å. The Li(2)-Si(1) bond length is 1.82 Å. La(1) is bonded in a 3-coordinate geometry to one Li(1), one Li(2), and one Si(1) atom. The La(1)-Si(1) bond length is 2.14 Å. Si(1) is bonded in a 2-coordinate geometry to one Li(2) and one La(1) atom.