La2Ti3O9 crystallizes in the triclinic P1 space group. There are four inequivalent La sites. In the first La site, La(1) is bonded to one O(12), one O(13), one O(15), one O(16), one O(17), one O(2), one O(4), one O(7), one O(8), one O(9), and two equivalent O(6) atoms to form LaO12 cuboctahedra that share  a cornercorner with one La(2)O12 cuboctahedra,  a cornercorner with one La(4)O12 cuboctahedra, corners with two equivalent La(1)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(1)O6 octahedra,  a faceface with one Ti(2)O6 octahedra,  a faceface with one Ti(5)O6 octahedra,  a faceface with one Ti(6)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, and faces with two equivalent Ti(4)O6 octahedra. In the second La site, La(2) is bonded to one O(10), one O(11), one O(16), one O(17), one O(18), one O(2), one O(5), one O(6), one O(8), one O(9), and two equivalent O(15) atoms to form LaO12 cuboctahedra that share  a cornercorner with one La(1)O12 cuboctahedra,  a cornercorner with one La(4)O12 cuboctahedra, corners with two equivalent La(2)O12 cuboctahedra, corners with two equivalent La(3)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(1)O6 octahedra,  a faceface with one Ti(2)O6 octahedra,  a faceface with one Ti(3)O6 octahedra,  a faceface with one Ti(4)O6 octahedra, faces with two equivalent Ti(5)O6 octahedra, and faces with two equivalent Ti(6)O6 octahedra. In the third La site, La(3) is bonded to one O(10), one O(11), one O(12), one O(14), one O(17), one O(18), one O(3), one O(4), one O(5), one O(9), and two equivalent O(1) atoms to form LaO12 cuboctahedra that share corners with two equivalent La(2)O12 cuboctahedra, corners with two equivalent La(3)O12 cuboctahedra, corners with two equivalent La(4)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra,  a faceface with one Ti(2)O6 octahedra,  a faceface with one Ti(3)O6 octahedra,  a faceface with one Ti(4)O6 octahedra,  a faceface with one Ti(5)O6 octahedra, faces with two equivalent Ti(1)O6 octahedra, and faces with two equivalent Ti(6)O6 octahedra. In the fourth La site, La(4) is bonded to one O(10), one O(11), one O(12), one O(13), one O(15), one O(18), one O(4), one O(5), one O(6), one O(7), and two equivalent O(2) atoms to form LaO12 cuboctahedra that share  a cornercorner with one La(1)O12 cuboctahedra,  a cornercorner with one La(2)O12 cuboctahedra, corners with two equivalent La(3)O12 cuboctahedra, corners with two equivalent La(4)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra,  a faceface with one Ti(3)O6 octahedra,  a faceface with one Ti(4)O6 octahedra,  a faceface with one Ti(5)O6 octahedra,  a faceface with one Ti(6)O6 octahedra, faces with two equivalent Ti(1)O6 octahedra, and faces with two equivalent Ti(2)O6 octahedra. There are six inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(10), one O(12), one O(18), one O(2), and one O(4) atom to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(6)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, and faces with two equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-12°. In the second Ti site, Ti(2) is bonded to one O(11), one O(13), one O(2), one O(3), one O(5), and one O(7) atom to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra, corners with two equivalent Ti(6)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, and faces with two equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-16°. In the third Ti site, Ti(3) is bonded to one O(12), one O(16), one O(3), one O(4), one O(6), and one O(8) atom to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-19°. In the fourth Ti site, Ti(4) is bonded to one O(13), one O(14), one O(17), one O(6), one O(7), and one O(9) atom to form TiO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ti(6)O6 octahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-19°. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(14), one O(15), one O(16), one O(18), and one O(8) atom to form TiO6 octahedra that share  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(6)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-19°. In the sixth Ti site, Ti(6) is bonded to one O(1), one O(11), one O(15), one O(17), one O(5), and one O(9) atom to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-13°. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent La(3), one Ti(1), and one Ti(6) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one La(1), one La(2), two equivalent La(4), one Ti(1), and one Ti(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one La(3), one Ti(2), and one Ti(3) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one La(1), one La(3), one La(4), one Ti(1), and one Ti(3) atom. In the fifth O site, O(5) is bonded to one La(2), one La(3), one La(4), one Ti(2), and one Ti(6) atom to form distorted OLa3Ti2 square pyramids that share  a cornercorner with one O(8)La2Ti2 trigonal pyramid and  a faceface with one O(9)La3Ti2 square pyramid. In the sixth O site, O(6) is bonded in a distorted linear geometry to one La(2), one La(4), two equivalent La(1), one Ti(3), and one Ti(4) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one La(1), one La(4), one Ti(2), and one Ti(4) atom. In the eighth O site, O(8) is bonded to one La(1), one La(2), one Ti(3), and one Ti(5) atom to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the ninth O site, O(9) is bonded to one La(1), one La(2), one La(3), one Ti(4), and one Ti(6) atom to form distorted OLa3Ti2 square pyramids that share  an edgeedge with one O(8)La2Ti2 trigonal pyramid and  a faceface with one O(5)La3Ti2 square pyramid. In the tenth O site, O(10) is bonded in a distorted linear geometry to one La(2), one La(3), one La(4), one Ti(1), and one Ti(5) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one La(2), one La(3), one La(4), one Ti(2), and one Ti(6) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one La(1), one La(3), one La(4), one Ti(1), and one Ti(3) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Ti(2), and one Ti(4) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one La(3), one Ti(4), and one Ti(5) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one La(1), one La(4), two equivalent La(2), one Ti(5), and one Ti(6) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Ti(3), and one Ti(5) atom. In the seventeenth O site, O(17) is bonded in a 2-coordinate geometry to one La(1), one La(2), one La(3), one Ti(4), and one Ti(6) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one La(2), one La(3), one La(4), one Ti(1), and one Ti(5) atom.
La2Ti3O9 crystallizes in the triclinic P1 space group. There are four inequivalent La sites. In the first La site, La(1) is bonded to one O(12), one O(13), one O(15), one O(16), one O(17), one O(2), one O(4), one O(7), one O(8), one O(9), and two equivalent O(6) atoms to form LaO12 cuboctahedra that share  a cornercorner with one La(2)O12 cuboctahedra,  a cornercorner with one La(4)O12 cuboctahedra, corners with two equivalent La(1)O12 cuboctahedra, corners with four equivalent La(3)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(1)O6 octahedra,  a faceface with one Ti(2)O6 octahedra,  a faceface with one Ti(5)O6 octahedra,  a faceface with one Ti(6)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, and faces with two equivalent Ti(4)O6 octahedra. The La(1)-O(12) bond length is 2.77 Å. The La(1)-O(13) bond length is 2.65 Å. The La(1)-O(15) bond length is 2.74 Å. The La(1)-O(16) bond length is 2.65 Å. The La(1)-O(17) bond length is 2.73 Å. The La(1)-O(2) bond length is 2.79 Å. The La(1)-O(4) bond length is 2.73 Å. The La(1)-O(7) bond length is 2.57 Å. The La(1)-O(8) bond length is 2.55 Å. The La(1)-O(9) bond length is 2.70 Å. There is one shorter (2.75 Å) and one longer (2.76 Å) La(1)-O(6) bond length. In the second La site, La(2) is bonded to one O(10), one O(11), one O(16), one O(17), one O(18), one O(2), one O(5), one O(6), one O(8), one O(9), and two equivalent O(15) atoms to form LaO12 cuboctahedra that share  a cornercorner with one La(1)O12 cuboctahedra,  a cornercorner with one La(4)O12 cuboctahedra, corners with two equivalent La(2)O12 cuboctahedra, corners with two equivalent La(3)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(4)O12 cuboctahedra,  a faceface with one Ti(1)O6 octahedra,  a faceface with one Ti(2)O6 octahedra,  a faceface with one Ti(3)O6 octahedra,  a faceface with one Ti(4)O6 octahedra, faces with two equivalent Ti(5)O6 octahedra, and faces with two equivalent Ti(6)O6 octahedra. The La(2)-O(10) bond length is 2.78 Å. The La(2)-O(11) bond length is 2.66 Å. The La(2)-O(16) bond length is 2.67 Å. The La(2)-O(17) bond length is 2.66 Å. The La(2)-O(18) bond length is 2.73 Å. The La(2)-O(2) bond length is 2.71 Å. The La(2)-O(5) bond length is 2.66 Å. The La(2)-O(6) bond length is 2.77 Å. The La(2)-O(8) bond length is 2.60 Å. The La(2)-O(9) bond length is 2.60 Å. There is one shorter (2.74 Å) and one longer (2.77 Å) La(2)-O(15) bond length. In the third La site, La(3) is bonded to one O(10), one O(11), one O(12), one O(14), one O(17), one O(18), one O(3), one O(4), one O(5), one O(9), and two equivalent O(1) atoms to form LaO12 cuboctahedra that share corners with two equivalent La(2)O12 cuboctahedra, corners with two equivalent La(3)O12 cuboctahedra, corners with two equivalent La(4)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra,  a faceface with one Ti(2)O6 octahedra,  a faceface with one Ti(3)O6 octahedra,  a faceface with one Ti(4)O6 octahedra,  a faceface with one Ti(5)O6 octahedra, faces with two equivalent Ti(1)O6 octahedra, and faces with two equivalent Ti(6)O6 octahedra. The La(3)-O(10) bond length is 2.79 Å. The La(3)-O(11) bond length is 2.74 Å. The La(3)-O(12) bond length is 2.84 Å. The La(3)-O(14) bond length is 2.51 Å. The La(3)-O(17) bond length is 2.79 Å. The La(3)-O(18) bond length is 2.80 Å. The La(3)-O(3) bond length is 2.52 Å. The La(3)-O(4) bond length is 2.84 Å. The La(3)-O(5) bond length is 2.71 Å. The La(3)-O(9) bond length is 2.78 Å. There is one shorter (2.75 Å) and one longer (2.76 Å) La(3)-O(1) bond length. In the fourth La site, La(4) is bonded to one O(10), one O(11), one O(12), one O(13), one O(15), one O(18), one O(4), one O(5), one O(6), one O(7), and two equivalent O(2) atoms to form LaO12 cuboctahedra that share  a cornercorner with one La(1)O12 cuboctahedra,  a cornercorner with one La(2)O12 cuboctahedra, corners with two equivalent La(3)O12 cuboctahedra, corners with two equivalent La(4)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra,  a faceface with one Ti(3)O6 octahedra,  a faceface with one Ti(4)O6 octahedra,  a faceface with one Ti(5)O6 octahedra,  a faceface with one Ti(6)O6 octahedra, faces with two equivalent Ti(1)O6 octahedra, and faces with two equivalent Ti(2)O6 octahedra. The La(4)-O(10) bond length is 2.69 Å. The La(4)-O(11) bond length is 2.72 Å. The La(4)-O(12) bond length is 2.68 Å. The La(4)-O(13) bond length is 2.62 Å. The La(4)-O(15) bond length is 2.78 Å. The La(4)-O(18) bond length is 2.68 Å. The La(4)-O(4) bond length is 2.62 Å. The La(4)-O(5) bond length is 2.77 Å. The La(4)-O(6) bond length is 2.74 Å. The La(4)-O(7) bond length is 2.63 Å. There is one shorter (2.73 Å) and one longer (2.79 Å) La(4)-O(2) bond length. There are six inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(10), one O(12), one O(18), one O(2), and one O(4) atom to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(6)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, and faces with two equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-12°. The Ti(1)-O(1) bond length is 1.93 Å. The Ti(1)-O(10) bond length is 1.93 Å. The Ti(1)-O(12) bond length is 1.94 Å. The Ti(1)-O(18) bond length is 1.88 Å. The Ti(1)-O(2) bond length is 1.95 Å. The Ti(1)-O(4) bond length is 2.01 Å. In the second Ti site, Ti(2) is bonded to one O(11), one O(13), one O(2), one O(3), one O(5), and one O(7) atom to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra, corners with two equivalent Ti(6)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, and faces with two equivalent La(4)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-16°. The Ti(2)-O(11) bond length is 2.02 Å. The Ti(2)-O(13) bond length is 1.90 Å. The Ti(2)-O(2) bond length is 2.09 Å. The Ti(2)-O(3) bond length is 1.90 Å. The Ti(2)-O(5) bond length is 1.93 Å. The Ti(2)-O(7) bond length is 1.94 Å. In the third Ti site, Ti(3) is bonded to one O(12), one O(16), one O(3), one O(4), one O(6), and one O(8) atom to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-19°. The Ti(3)-O(12) bond length is 2.00 Å. The Ti(3)-O(16) bond length is 1.95 Å. The Ti(3)-O(3) bond length is 1.88 Å. The Ti(3)-O(4) bond length is 2.00 Å. The Ti(3)-O(6) bond length is 2.08 Å. The Ti(3)-O(8) bond length is 2.00 Å. In the fourth Ti site, Ti(4) is bonded to one O(13), one O(14), one O(17), one O(6), one O(7), and one O(9) atom to form TiO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ti(6)O6 octahedra,  a faceface with one La(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-19°. The Ti(4)-O(13) bond length is 1.95 Å. The Ti(4)-O(14) bond length is 1.90 Å. The Ti(4)-O(17) bond length is 1.99 Å. The Ti(4)-O(6) bond length is 2.01 Å. The Ti(4)-O(7) bond length is 1.99 Å. The Ti(4)-O(9) bond length is 2.04 Å. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(14), one O(15), one O(16), one O(18), and one O(8) atom to form TiO6 octahedra that share  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(6)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-19°. The Ti(5)-O(10) bond length is 2.01 Å. The Ti(5)-O(14) bond length is 1.94 Å. The Ti(5)-O(15) bond length is 2.07 Å. The Ti(5)-O(16) bond length is 1.88 Å. The Ti(5)-O(18) bond length is 2.05 Å. The Ti(5)-O(8) bond length is 1.90 Å. In the sixth Ti site, Ti(6) is bonded to one O(1), one O(11), one O(15), one O(17), one O(5), and one O(9) atom to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(4)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-13°. The Ti(6)-O(1) bond length is 1.98 Å. The Ti(6)-O(11) bond length is 1.87 Å. The Ti(6)-O(15) bond length is 1.96 Å. The Ti(6)-O(17) bond length is 1.92 Å. The Ti(6)-O(5) bond length is 2.00 Å. The Ti(6)-O(9) bond length is 1.99 Å. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent La(3), one Ti(1), and one Ti(6) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one La(1), one La(2), two equivalent La(4), one Ti(1), and one Ti(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one La(3), one Ti(2), and one Ti(3) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one La(1), one La(3), one La(4), one Ti(1), and one Ti(3) atom. In the fifth O site, O(5) is bonded to one La(2), one La(3), one La(4), one Ti(2), and one Ti(6) atom to form distorted OLa3Ti2 square pyramids that share  a cornercorner with one O(8)La2Ti2 trigonal pyramid and  a faceface with one O(9)La3Ti2 square pyramid. In the sixth O site, O(6) is bonded in a distorted linear geometry to one La(2), one La(4), two equivalent La(1), one Ti(3), and one Ti(4) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one La(1), one La(4), one Ti(2), and one Ti(4) atom. In the eighth O site, O(8) is bonded to one La(1), one La(2), one Ti(3), and one Ti(5) atom to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the ninth O site, O(9) is bonded to one La(1), one La(2), one La(3), one Ti(4), and one Ti(6) atom to form distorted OLa3Ti2 square pyramids that share  an edgeedge with one O(8)La2Ti2 trigonal pyramid and  a faceface with one O(5)La3Ti2 square pyramid. In the tenth O site, O(10) is bonded in a distorted linear geometry to one La(2), one La(3), one La(4), one Ti(1), and one Ti(5) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one La(2), one La(3), one La(4), one Ti(2), and one Ti(6) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one La(1), one La(3), one La(4), one Ti(1), and one Ti(3) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one La(1), one La(4), one Ti(2), and one Ti(4) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one La(3), one Ti(4), and one Ti(5) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one La(1), one La(4), two equivalent La(2), one Ti(5), and one Ti(6) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Ti(3), and one Ti(5) atom. In the seventeenth O site, O(17) is bonded in a 2-coordinate geometry to one La(1), one La(2), one La(3), one Ti(4), and one Ti(6) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one La(2), one La(3), one La(4), one Ti(1), and one Ti(5) atom.