La2Ti2ZnO8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), and five equivalent O(4) atoms. In the second La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), and five equivalent O(4) atoms. Ti(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. Zn(1) is bonded to four equivalent O(3) atoms to form distorted corner-sharing ZnO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ti(1) and two equivalent Zn(1) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to five La(1,1) and one Ti(1) atom.
La2Ti2ZnO8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), and five equivalent O(4) atoms. Both La(1)-O(1) bond lengths are 2.55 Å. Both La(1)-O(2) bond lengths are 2.52 Å. There is one shorter (2.39 Å) and four longer (2.68 Å) La(1)-O(4) bond lengths. In the second La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), and five equivalent O(4) atoms. Both La(1)-O(1) bond lengths are 2.55 Å. Both La(1)-O(2) bond lengths are 2.52 Å. There is one shorter (2.39 Å) and four longer (2.68 Å) La(1)-O(4) bond lengths. Ti(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. The Ti(1)-O(3) bond length is 1.81 Å. The Ti(1)-O(4) bond length is 2.78 Å. Both Ti(1)-O(1) bond lengths are 1.93 Å. Both Ti(1)-O(2) bond lengths are 1.94 Å. Zn(1) is bonded to four equivalent O(3) atoms to form distorted corner-sharing ZnO4 tetrahedra. All Zn(1)-O(3) bond lengths are 2.06 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the second O site, O(2) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ti(1) and two equivalent Zn(1) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to five La(1,1) and one Ti(1) atom.