SrV6O11 crystallizes in the orthorhombic Cmc2_1 space group. Sr(1) is bonded to one O(1), one O(3), two equivalent O(2), two equivalent O(4), two equivalent O(6), and four equivalent O(5) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, edges with two equivalent V(2)O6 octahedra, edges with four equivalent V(1)O6 octahedra, edges with three equivalent V(5)O5 trigonal bipyramids, faces with three equivalent V(3)O6 octahedra, and faces with three equivalent V(4)O6 octahedra. There are five inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with two equivalent V(5)O5 trigonal bipyramids, edges with two equivalent Sr(1)O12 cuboctahedra, edges with two equivalent V(1)O6 octahedra, and edges with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the second V site, V(2) is bonded to one O(7), one O(8), two equivalent O(2), and two equivalent O(4) atoms to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with two equivalent V(5)O5 trigonal bipyramids, edges with two equivalent Sr(1)O12 cuboctahedra, and edges with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the third V site, V(3) is bonded to one O(1), one O(6), two equivalent O(2), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(1)O6 octahedra, corners with three equivalent V(5)O5 trigonal bipyramids, faces with three equivalent Sr(1)O12 cuboctahedra, and  a faceface with one V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-55°. In the fourth V site, V(4) is bonded to one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(1)O6 octahedra, corners with three equivalent V(5)O5 trigonal bipyramids, faces with three equivalent Sr(1)O12 cuboctahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the fifth V site, V(5) is bonded to one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form VO5 trigonal bipyramids that share corners with two equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra, corners with three equivalent V(4)O6 octahedra, corners with four equivalent V(1)O6 octahedra, and edges with three equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 40-57°. There are eight inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one Sr(1), one V(4), and two equivalent V(1) atoms. In the second O site, O(4) is bonded to one Sr(1), one V(1), one V(2), and one V(4) atom to form a mixture of distorted corner and edge-sharing OSrV3 tetrahedra. In the third O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Sr(1), one V(3), one V(4), and one V(5) atom. In the fourth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Sr(1), one V(3), one V(4), and one V(5) atom. In the fifth O site, O(7) is bonded in a rectangular see-saw-like geometry to one V(2), one V(5), and two equivalent V(1) atoms. In the sixth O site, O(8) is bonded in a rectangular see-saw-like geometry to one V(2), one V(5), and two equivalent V(1) atoms. In the seventh O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one V(3), and two equivalent V(1) atoms. In the eighth O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one V(1), one V(2), and one V(3) atom.
SrV6O11 crystallizes in the orthorhombic Cmc2_1 space group. Sr(1) is bonded to one O(1), one O(3), two equivalent O(2), two equivalent O(4), two equivalent O(6), and four equivalent O(5) atoms to form SrO12 cuboctahedra that share corners with six equivalent Sr(1)O12 cuboctahedra, edges with two equivalent V(2)O6 octahedra, edges with four equivalent V(1)O6 octahedra, edges with three equivalent V(5)O5 trigonal bipyramids, faces with three equivalent V(3)O6 octahedra, and faces with three equivalent V(4)O6 octahedra. The Sr(1)-O(1) bond length is 2.77 Å. The Sr(1)-O(3) bond length is 2.73 Å. Both Sr(1)-O(2) bond lengths are 2.77 Å. Both Sr(1)-O(4) bond lengths are 2.73 Å. Both Sr(1)-O(6) bond lengths are 3.00 Å. There are two shorter (2.94 Å) and two longer (3.00 Å) Sr(1)-O(5) bond lengths. There are five inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with two equivalent V(5)O5 trigonal bipyramids, edges with two equivalent Sr(1)O12 cuboctahedra, edges with two equivalent V(1)O6 octahedra, and edges with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. The V(1)-O(1) bond length is 2.00 Å. The V(1)-O(2) bond length is 1.99 Å. The V(1)-O(3) bond length is 2.00 Å. The V(1)-O(4) bond length is 2.00 Å. The V(1)-O(7) bond length is 2.10 Å. The V(1)-O(8) bond length is 2.07 Å. In the second V site, V(2) is bonded to one O(7), one O(8), two equivalent O(2), and two equivalent O(4) atoms to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with two equivalent V(5)O5 trigonal bipyramids, edges with two equivalent Sr(1)O12 cuboctahedra, and edges with four equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. The V(2)-O(7) bond length is 2.11 Å. The V(2)-O(8) bond length is 2.12 Å. Both V(2)-O(2) bond lengths are 1.99 Å. Both V(2)-O(4) bond lengths are 1.99 Å. In the third V site, V(3) is bonded to one O(1), one O(6), two equivalent O(2), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(1)O6 octahedra, corners with three equivalent V(5)O5 trigonal bipyramids, faces with three equivalent Sr(1)O12 cuboctahedra, and  a faceface with one V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-55°. The V(3)-O(1) bond length is 1.97 Å. The V(3)-O(6) bond length is 2.07 Å. Both V(3)-O(2) bond lengths are 1.99 Å. Both V(3)-O(5) bond lengths are 2.16 Å. In the fourth V site, V(4) is bonded to one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(1)O6 octahedra, corners with three equivalent V(5)O5 trigonal bipyramids, faces with three equivalent Sr(1)O12 cuboctahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. The V(4)-O(3) bond length is 1.97 Å. The V(4)-O(6) bond length is 2.08 Å. Both V(4)-O(4) bond lengths are 1.98 Å. Both V(4)-O(5) bond lengths are 2.17 Å. In the fifth V site, V(5) is bonded to one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form VO5 trigonal bipyramids that share corners with two equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra, corners with three equivalent V(4)O6 octahedra, corners with four equivalent V(1)O6 octahedra, and edges with three equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 40-57°. The V(5)-O(6) bond length is 1.89 Å. The V(5)-O(7) bond length is 2.07 Å. The V(5)-O(8) bond length is 2.12 Å. Both V(5)-O(5) bond lengths are 1.80 Å. There are eight inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one Sr(1), one V(4), and two equivalent V(1) atoms. In the second O site, O(4) is bonded to one Sr(1), one V(1), one V(2), and one V(4) atom to form a mixture of distorted corner and edge-sharing OSrV3 tetrahedra. In the third O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Sr(1), one V(3), one V(4), and one V(5) atom. In the fourth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Sr(1), one V(3), one V(4), and one V(5) atom. In the fifth O site, O(7) is bonded in a rectangular see-saw-like geometry to one V(2), one V(5), and two equivalent V(1) atoms. In the sixth O site, O(8) is bonded in a rectangular see-saw-like geometry to one V(2), one V(5), and two equivalent V(1) atoms. In the seventh O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one V(3), and two equivalent V(1) atoms. In the eighth O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one V(1), one V(2), and one V(3) atom.