data_LiSiGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.77
_cell_length_b   2.77
_cell_length_c   8.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiSiGe2
_chemical_formula_sum   'Li1 Si1 Ge2'
_cell_volume   68.1
_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  Li2  1  0.0  0.0  0.58  1.0
  Si  Si3  1  0.38  0.38  0.52  1.0
  Ge  Ge0  1  0.0  0.0  0.73  1.0
  Ge  Ge1  1  0.38  0.38  0.4  1.0

data_LiSiGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.91
_cell_length_b   3.91
_cell_length_c   8.89
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LiSiGe2
_chemical_formula_sum   'Li2 Si2 Ge4'
_cell_volume   136.2
_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  0.0  0.0  0.58  1.0
  Si  Si1  2  0.38  0.0  0.52  1.0
  Ge  Ge2  2  0.0  0.0  0.73  1.0
  Ge  Ge3  2  0.38  0.0  0.4  1.0

Li Si Ge Ge
LiGe2Si crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two LiGe2Si clusters. Li(1) is bonded in a 2-coordinate geometry to one Ge(1) and one Si(1) atom. The Li(1)-Ge(1) bond length is 1.40 Å. The Li(1)-Si(1) bond length is 1.60 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a single-bond geometry to one Li(1) atom. In the second Ge site, Ge(2) is bonded in a single-bond geometry to one Si(1) atom. The Ge(2)-Si(1) bond length is 0.98 Å. Si(1) is bonded in a 2-coordinate geometry to one Li(1) and one Ge(2) atom.