Li2VSi7O16 crystallizes in the triclinic P1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(3), and one O(6) atom. In the second Li site, Li(2) is bonded in a distorted square co-planar geometry to one O(11), one O(16), one O(7), and one O(8) atom. V(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(11), one O(3), and one O(7) atom. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(12), one O(2), one O(4), and one O(7) atom to form corner-sharing SiO4 tetrahedra. In the second Si site, Si(2) is bonded to one O(14), one O(2), one O(6), and one O(9) atom to form corner-sharing SiO4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(13), one O(5), and one O(8) atom to form corner-sharing SiO4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(16), one O(3), and one O(8) atom to form corner-sharing SiO4 tetrahedra. In the fifth Si site, Si(5) is bonded to one O(11), one O(15), one O(4), and one O(9) atom to form corner-sharing SiO4 tetrahedra. In the sixth Si site, Si(6) is bonded to one O(10), one O(14), one O(15), and one O(5) atom to form corner-sharing SiO4 tetrahedra. In the seventh Si site, Si(7) is bonded to one O(10), one O(13), one O(16), and one O(6) atom to form corner-sharing SiO4 tetrahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one V(1), and one Si(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(1), one V(1), and one Si(4) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Si(3) and one Si(6) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one Si(2), and one Si(7) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Li(2), one V(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Li(2), one Si(3), and one Si(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Li(1), one Si(6), and one Si(7) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Li(2), one V(1), and one Si(5) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(7) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(6) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Si(5) and one Si(6) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Li(2), one Si(4), and one Si(7) atom.
Li2VSi7O16 crystallizes in the triclinic P1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(3), and one O(6) atom. The Li(1)-O(1) bond length is 1.92 Å. The Li(1)-O(10) bond length is 2.56 Å. The Li(1)-O(3) bond length is 1.94 Å. The Li(1)-O(6) bond length is 2.22 Å. In the second Li site, Li(2) is bonded in a distorted square co-planar geometry to one O(11), one O(16), one O(7), and one O(8) atom. The Li(2)-O(11) bond length is 1.90 Å. The Li(2)-O(16) bond length is 2.07 Å. The Li(2)-O(7) bond length is 1.92 Å. The Li(2)-O(8) bond length is 2.22 Å. V(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(11), one O(3), and one O(7) atom. The V(1)-O(1) bond length is 2.17 Å. The V(1)-O(11) bond length is 2.06 Å. The V(1)-O(3) bond length is 2.10 Å. The V(1)-O(7) bond length is 2.07 Å. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(12), one O(2), one O(4), and one O(7) atom to form corner-sharing SiO4 tetrahedra. The Si(1)-O(12) bond length is 1.64 Å. The Si(1)-O(2) bond length is 1.66 Å. The Si(1)-O(4) bond length is 1.65 Å. The Si(1)-O(7) bond length is 1.59 Å. In the second Si site, Si(2) is bonded to one O(14), one O(2), one O(6), and one O(9) atom to form corner-sharing SiO4 tetrahedra. The Si(2)-O(14) bond length is 1.63 Å. The Si(2)-O(2) bond length is 1.62 Å. The Si(2)-O(6) bond length is 1.68 Å. The Si(2)-O(9) bond length is 1.62 Å. In the third Si site, Si(3) is bonded to one O(1), one O(13), one O(5), and one O(8) atom to form corner-sharing SiO4 tetrahedra. The Si(3)-O(1) bond length is 1.60 Å. The Si(3)-O(13) bond length is 1.65 Å. The Si(3)-O(5) bond length is 1.65 Å. The Si(3)-O(8) bond length is 1.64 Å. In the fourth Si site, Si(4) is bonded to one O(12), one O(16), one O(3), and one O(8) atom to form corner-sharing SiO4 tetrahedra. The Si(4)-O(12) bond length is 1.63 Å. The Si(4)-O(16) bond length is 1.68 Å. The Si(4)-O(3) bond length is 1.60 Å. The Si(4)-O(8) bond length is 1.65 Å. In the fifth Si site, Si(5) is bonded to one O(11), one O(15), one O(4), and one O(9) atom to form corner-sharing SiO4 tetrahedra. The Si(5)-O(11) bond length is 1.60 Å. The Si(5)-O(15) bond length is 1.66 Å. The Si(5)-O(4) bond length is 1.64 Å. The Si(5)-O(9) bond length is 1.66 Å. In the sixth Si site, Si(6) is bonded to one O(10), one O(14), one O(15), and one O(5) atom to form corner-sharing SiO4 tetrahedra. The Si(6)-O(10) bond length is 1.67 Å. The Si(6)-O(14) bond length is 1.64 Å. The Si(6)-O(15) bond length is 1.63 Å. The Si(6)-O(5) bond length is 1.63 Å. In the seventh Si site, Si(7) is bonded to one O(10), one O(13), one O(16), and one O(6) atom to form corner-sharing SiO4 tetrahedra. The Si(7)-O(10) bond length is 1.64 Å. The Si(7)-O(13) bond length is 1.62 Å. The Si(7)-O(16) bond length is 1.64 Å. The Si(7)-O(6) bond length is 1.65 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one V(1), and one Si(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Li(1), one V(1), and one Si(4) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Si(3) and one Si(6) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one Si(2), and one Si(7) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Li(2), one V(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Li(2), one Si(3), and one Si(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(5) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Li(1), one Si(6), and one Si(7) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Li(2), one V(1), and one Si(5) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(7) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(6) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Si(5) and one Si(6) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Li(2), one Si(4), and one Si(7) atom.