The material described by Li4Ge9O20 crystallizes in the monoclinic C2 space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(2), one O(8), and one O(9) atom. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to two equivalent O(5) and two equivalent O(7) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(8), and one O(9) atom to form GeO6 octahedra that share  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra,  a cornercorner with one Ge(4)O5 trigonal bipyramid, and  an edgeedge with one Ge(4)O5 trigonal bipyramid. In the second Ge site, Ge(2) is bonded to one O(10), one O(2), one O(3), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O4 tetrahedra, and  a cornercorner with one Ge(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 27-60°. In the third Ge site, Ge(3) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  a cornercorner with one Ge(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 63°. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(10), one O(5), one O(6), and one O(8) atom to form GeO5 trigonal bipyramids that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  an edgeedge with one Ge(1)O6 octahedra. The corner-sharing octahedral tilt angles are 63°. In the fifth Ge site, Ge(5) is bonded to two equivalent O(4) and two equivalent O(8) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra, corners with two equivalent Ge(3)O4 tetrahedra, and corners with two equivalent Ge(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 61°. There are ten inequivalent O sites. In the first O site, O(5) is bonded to one Li(2), one Li(3), one Ge(1), and one Ge(4) atom to form a mixture of edge and corner-sharing OLi2Ge2 trigonal pyramids. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(2), one Ge(3), and one Ge(4) atom. In the third O site, O(7) is bonded in a trigonal non-coplanar geometry to one Li(3), one Ge(2), and one Ge(3) atom. In the fourth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Ge(1), one Ge(4), and one Ge(5) atom. In the fifth O site, O(9) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ge(1), and one Ge(3) atom. In the sixth O site, O(10) is bonded in a trigonal planar geometry to one Li(1), one Ge(2), and one Ge(4) atom. In the seventh O site, O(1) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ge(1), and one Ge(4) atom. In the eighth O site, O(2) is bonded to one Li(1), one Li(2), one Ge(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OLi2Ge2 trigonal pyramids. In the ninth O site, O(3) is bonded in a bent 150 degrees geometry to one Ge(1) and one Ge(2) atom. In the tenth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li4Ge9O20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.351
_cell_length_b   7.351
_cell_length_c   7.515
_cell_angle_alpha   89.590
_cell_angle_beta   89.590
_cell_angle_gamma   65.285
_symmetry_Int_Tables_number   1
_cell_volume   368.855
_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  0.326  0.066  0.378  1.0
  Li  Li1  1  0.934  0.674  0.622  1.0
  Li  Li2  1  0.334  0.666  0.000  1.0
  Li  Li3  1  0.720  0.280  0.000  1.0
  Ge  Ge4  1  0.343  0.352  0.707  1.0
  Ge  Ge5  1  0.648  0.657  0.293  1.0
  Ge  Ge6  1  0.605  0.921  0.952  1.0
  Ge  Ge7  1  0.079  0.395  0.048  1.0
  Ge  Ge8  1  0.117  0.080  0.760  1.0
  Ge  Ge9  1  0.920  0.883  0.240  1.0
  Ge  Ge10  1  0.516  0.675  0.668  1.0
  Ge  Ge11  1  0.325  0.484  0.332  1.0
  Ge  Ge12  1  0.768  0.232  0.500  1.0
  O  O13  1  0.216  0.561  0.544  1.0
  O  O14  1  0.439  0.784  0.456  1.0
  O  O15  1  0.147  0.509  0.870  1.0
  O  O16  1  0.491  0.853  0.130  1.0
  O  O17  1  0.446  0.158  0.879  1.0
  O  O18  1  0.924  0.107  0.320  1.0
  O  O19  1  0.893  0.076  0.680  1.0
  O  O20  1  0.525  0.459  0.784  1.0
  O  O21  1  0.541  0.475  0.216  1.0
  O  O22  1  0.161  0.703  0.200  1.0
  O  O23  1  0.297  0.839  0.800  1.0
  O  O24  1  0.804  0.971  0.033  1.0
  O  O25  1  0.029  0.196  0.967  1.0
  O  O26  1  0.521  0.244  0.494  1.0
  O  O27  1  0.756  0.479  0.506  1.0
  O  O28  1  0.788  0.801  0.389  1.0
  O  O29  1  0.199  0.212  0.611  1.0
  O  O30  1  0.250  0.308  0.228  1.0
  O  O31  1  0.692  0.750  0.772  1.0
  O  O32  1  0.842  0.554  0.121  1.0
[/CIF]
.
The material described by Li4Ge9O20 crystallizes in the monoclinic C2 space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(2), one O(8), and one O(9) atom. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to two equivalent O(5) and two equivalent O(7) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(8), and one O(9) atom to form GeO6 octahedra that share  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra,  a cornercorner with one Ge(4)O5 trigonal bipyramid, and  an edgeedge with one Ge(4)O5 trigonal bipyramid. In the second Ge site, Ge(2) is bonded to one O(10), one O(2), one O(3), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O4 tetrahedra, and  a cornercorner with one Ge(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 27-60°. In the third Ge site, Ge(3) is bonded to one O(4), one O(6), one O(7), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  a cornercorner with one Ge(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 63°. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(10), one O(5), one O(6), and one O(8) atom to form GeO5 trigonal bipyramids that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(3)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and  an edgeedge with one Ge(1)O6 octahedra. The corner-sharing octahedral tilt angles are 63°. In the fifth Ge site, Ge(5) is bonded to two equivalent O(4) and two equivalent O(8) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(1)O6 octahedra, corners with two equivalent Ge(3)O4 tetrahedra, and corners with two equivalent Ge(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 61°. There are ten inequivalent O sites. In the first O site, O(5) is bonded to one Li(2), one Li(3), one Ge(1), and one Ge(4) atom to form a mixture of edge and corner-sharing OLi2Ge2 trigonal pyramids. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(2), one Ge(3), and one Ge(4) atom. In the third O site, O(7) is bonded in a trigonal non-coplanar geometry to one Li(3), one Ge(2), and one Ge(3) atom. In the fourth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Ge(1), one Ge(4), and one Ge(5) atom. In the fifth O site, O(9) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ge(1), and one Ge(3) atom. In the sixth O site, O(10) is bonded in a trigonal planar geometry to one Li(1), one Ge(2), and one Ge(4) atom. In the seventh O site, O(1) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ge(1), and one Ge(4) atom. In the eighth O site, O(2) is bonded to one Li(1), one Li(2), one Ge(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OLi2Ge2 trigonal pyramids. In the ninth O site, O(3) is bonded in a bent 150 degrees geometry to one Ge(1) and one Ge(2) atom. In the tenth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li4Ge9O20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.351
_cell_length_b   7.351
_cell_length_c   7.515
_cell_angle_alpha   89.590
_cell_angle_beta   89.590
_cell_angle_gamma   65.285
_symmetry_Int_Tables_number   1
_cell_volume   368.855
_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  0.326  0.066  0.378  1.0
  Li  Li1  1  0.934  0.674  0.622  1.0
  Li  Li2  1  0.334  0.666  0.000  1.0
  Li  Li3  1  0.720  0.280  0.000  1.0
  Ge  Ge4  1  0.343  0.352  0.707  1.0
  Ge  Ge5  1  0.648  0.657  0.293  1.0
  Ge  Ge6  1  0.605  0.921  0.952  1.0
  Ge  Ge7  1  0.079  0.395  0.048  1.0
  Ge  Ge8  1  0.117  0.080  0.760  1.0
  Ge  Ge9  1  0.920  0.883  0.240  1.0
  Ge  Ge10  1  0.516  0.675  0.668  1.0
  Ge  Ge11  1  0.325  0.484  0.332  1.0
  Ge  Ge12  1  0.768  0.232  0.500  1.0
  O  O13  1  0.216  0.561  0.544  1.0
  O  O14  1  0.439  0.784  0.456  1.0
  O  O15  1  0.147  0.509  0.870  1.0
  O  O16  1  0.491  0.853  0.130  1.0
  O  O17  1  0.446  0.158  0.879  1.0
  O  O18  1  0.924  0.107  0.320  1.0
  O  O19  1  0.893  0.076  0.680  1.0
  O  O20  1  0.525  0.459  0.784  1.0
  O  O21  1  0.541  0.475  0.216  1.0
  O  O22  1  0.161  0.703  0.200  1.0
  O  O23  1  0.297  0.839  0.800  1.0
  O  O24  1  0.804  0.971  0.033  1.0
  O  O25  1  0.029  0.196  0.967  1.0
  O  O26  1  0.521  0.244  0.494  1.0
  O  O27  1  0.756  0.479  0.506  1.0
  O  O28  1  0.788  0.801  0.389  1.0
  O  O29  1  0.199  0.212  0.611  1.0
  O  O30  1  0.250  0.308  0.228  1.0
  O  O31  1  0.692  0.750  0.772  1.0
  O  O32  1  0.842  0.554  0.121  1.0
[/CIF]
.