Li2V2GeSiO10 crystallizes in the monoclinic Pm space group. Li(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted LiO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and edges with two equivalent Li(1)O6 octahedra. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(2), one O(5), one O(8), and two equivalent O(3) atoms. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(7), and two equivalent O(6) atoms. Ge(1) is bonded to one O(5), one O(8), and two equivalent O(6) atoms to form GeO4 tetrahedra that share corners with four equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-62°. Si(1) is bonded to one O(1), one O(4), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with four equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-61°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(2) and one Si(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Li(1) and one V(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one V(1), and one Si(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(1), one V(2), and one Si(1) atom to form distorted corner-sharing OLi2VSi trigonal pyramids. In the fifth O site, O(5) is bonded to two equivalent Li(1), one V(1), and one Ge(1) atom to form distorted corner-sharing OLi2VGe tetrahedra. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Li(1), one V(2), and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Li(1) and one V(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one V(1) and one Ge(1) atom.
Li2V2GeSiO10 crystallizes in the monoclinic Pm space group. Li(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted LiO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and edges with two equivalent Li(1)O6 octahedra. The Li(1)-O(2) bond length is 2.47 Å. The Li(1)-O(3) bond length is 2.04 Å. The Li(1)-O(4) bond length is 1.98 Å. The Li(1)-O(5) bond length is 2.02 Å. The Li(1)-O(6) bond length is 2.07 Å. The Li(1)-O(7) bond length is 2.45 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(2), one O(5), one O(8), and two equivalent O(3) atoms. The V(1)-O(2) bond length is 1.63 Å. The V(1)-O(5) bond length is 2.02 Å. The V(1)-O(8) bond length is 1.81 Å. Both V(1)-O(3) bond lengths are 1.91 Å. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(7), and two equivalent O(6) atoms. The V(2)-O(1) bond length is 1.81 Å. The V(2)-O(4) bond length is 2.11 Å. The V(2)-O(7) bond length is 1.64 Å. Both V(2)-O(6) bond lengths are 1.88 Å. Ge(1) is bonded to one O(5), one O(8), and two equivalent O(6) atoms to form GeO4 tetrahedra that share corners with four equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-62°. The Ge(1)-O(5) bond length is 1.77 Å. The Ge(1)-O(8) bond length is 1.77 Å. Both Ge(1)-O(6) bond lengths are 1.77 Å. Si(1) is bonded to one O(1), one O(4), and two equivalent O(3) atoms to form SiO4 tetrahedra that share corners with four equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-61°. The Si(1)-O(1) bond length is 1.65 Å. The Si(1)-O(4) bond length is 1.64 Å. Both Si(1)-O(3) bond lengths are 1.65 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(2) and one Si(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Li(1) and one V(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one V(1), and one Si(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(1), one V(2), and one Si(1) atom to form distorted corner-sharing OLi2VSi trigonal pyramids. In the fifth O site, O(5) is bonded to two equivalent Li(1), one V(1), and one Ge(1) atom to form distorted corner-sharing OLi2VGe tetrahedra. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Li(1), one V(2), and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Li(1) and one V(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one V(1) and one Ge(1) atom.