Ti6O11 crystallizes in the triclinic P-1 space group. There are six inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), one O(4), one O(7), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-53°. In the third Ti site, Ti(3) is bonded to one O(11), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 43-61°. In the fourth Ti site, Ti(4) is bonded to one O(10), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(6), one O(8), one O(9), and two equivalent O(11) atoms to form a mixture of distorted face, corner, and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-56°. In the sixth Ti site, Ti(6) is bonded to one O(11), one O(7), one O(8), one O(9), and two equivalent O(10) atoms to form a mixture of distorted face, corner, and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ti(2) and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(2), and one Ti(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ti(4) and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(2), and one Ti(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(3), and one Ti(4) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Ti(1), one Ti(3), and one Ti(5) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ti(2), one Ti(3), and one Ti(6) atom. In the eighth O site, O(8) is bonded to one Ti(3), one Ti(4), one Ti(5), and one Ti(6) atom to form distorted edge-sharing OTi4 trigonal pyramids. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ti(4), one Ti(5), and one Ti(6) atom. In the tenth O site, O(10) is bonded to one Ti(4), one Ti(5), and two equivalent Ti(6) atoms to form a mixture of distorted corner and edge-sharing OTi4 trigonal pyramids. In the eleventh O site, O(11) is bonded to one Ti(3), one Ti(6), and two equivalent Ti(5) atoms to form a mixture of distorted corner and edge-sharing OTi4 trigonal pyramids.
Ti6O11 crystallizes in the triclinic P-1 space group. There are six inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. The Ti(1)-O(2) bond length is 1.96 Å. The Ti(1)-O(4) bond length is 1.96 Å. The Ti(1)-O(5) bond length is 1.99 Å. The Ti(1)-O(6) bond length is 2.07 Å. Both Ti(1)-O(1) bond lengths are 1.95 Å. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), one O(4), one O(7), and two equivalent O(3) atoms to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-53°. The Ti(2)-O(1) bond length is 1.97 Å. The Ti(2)-O(2) bond length is 2.03 Å. The Ti(2)-O(4) bond length is 1.99 Å. The Ti(2)-O(7) bond length is 2.05 Å. Both Ti(2)-O(3) bond lengths are 1.97 Å. In the third Ti site, Ti(3) is bonded to one O(11), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 43-61°. The Ti(3)-O(11) bond length is 2.11 Å. The Ti(3)-O(2) bond length is 1.89 Å. The Ti(3)-O(5) bond length is 1.89 Å. The Ti(3)-O(6) bond length is 1.96 Å. The Ti(3)-O(7) bond length is 1.98 Å. The Ti(3)-O(8) bond length is 2.11 Å. In the fourth Ti site, Ti(4) is bonded to one O(10), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form a mixture of corner and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. The Ti(4)-O(10) bond length is 2.07 Å. The Ti(4)-O(3) bond length is 1.90 Å. The Ti(4)-O(4) bond length is 1.93 Å. The Ti(4)-O(5) bond length is 1.98 Å. The Ti(4)-O(8) bond length is 2.05 Å. The Ti(4)-O(9) bond length is 2.09 Å. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(6), one O(8), one O(9), and two equivalent O(11) atoms to form a mixture of distorted face, corner, and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 42-56°. The Ti(5)-O(10) bond length is 2.00 Å. The Ti(5)-O(6) bond length is 1.88 Å. The Ti(5)-O(8) bond length is 2.12 Å. The Ti(5)-O(9) bond length is 1.84 Å. There is one shorter (1.97 Å) and one longer (2.21 Å) Ti(5)-O(11) bond length. In the sixth Ti site, Ti(6) is bonded to one O(11), one O(7), one O(8), one O(9), and two equivalent O(10) atoms to form a mixture of distorted face, corner, and edge-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. The Ti(6)-O(11) bond length is 2.06 Å. The Ti(6)-O(7) bond length is 1.84 Å. The Ti(6)-O(8) bond length is 2.03 Å. The Ti(6)-O(9) bond length is 1.96 Å. There is one shorter (1.99 Å) and one longer (2.18 Å) Ti(6)-O(10) bond length. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ti(2) and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(2), and one Ti(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ti(4) and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(2), and one Ti(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ti(1), one Ti(3), and one Ti(4) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Ti(1), one Ti(3), and one Ti(5) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ti(2), one Ti(3), and one Ti(6) atom. In the eighth O site, O(8) is bonded to one Ti(3), one Ti(4), one Ti(5), and one Ti(6) atom to form distorted edge-sharing OTi4 trigonal pyramids. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ti(4), one Ti(5), and one Ti(6) atom. In the tenth O site, O(10) is bonded to one Ti(4), one Ti(5), and two equivalent Ti(6) atoms to form a mixture of distorted corner and edge-sharing OTi4 trigonal pyramids. In the eleventh O site, O(11) is bonded to one Ti(3), one Ti(6), and two equivalent Ti(5) atoms to form a mixture of distorted corner and edge-sharing OTi4 trigonal pyramids.