Ta7InO19 crystallizes in the hexagonal P-6c2 space group. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), and three equivalent O(1) atoms. In the second Ta site, Ta(2) is bonded in an octahedral geometry to six equivalent O(4) atoms. In(1) is bonded in a 6-coordinate geometry to six equivalent O(4) atoms. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(2), and one In(1) atom. In the second O site, O(5) is bonded in a trigonal planar geometry to three equivalent Ta(1) atoms. In the third O site, O(1) is bonded in a distorted bent 150 degrees geometry to three equivalent Ta(1) atoms. In the fourth O site, O(2) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to three equivalent Ta(1) atoms.
Ta7InO19 crystallizes in the hexagonal P-6c2 space group. There are two inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), and three equivalent O(1) atoms. The Ta(1)-O(2) bond length is 1.93 Å. The Ta(1)-O(3) bond length is 2.04 Å. The Ta(1)-O(4) bond length is 2.07 Å. The Ta(1)-O(5) bond length is 2.02 Å. There are two shorter (2.00 Å) and one longer (2.45 Å) Ta(1)-O(1) bond length. In the second Ta site, Ta(2) is bonded in an octahedral geometry to six equivalent O(4) atoms. All Ta(2)-O(4) bond lengths are 2.03 Å. In(1) is bonded in a 6-coordinate geometry to six equivalent O(4) atoms. All In(1)-O(4) bond lengths are 2.36 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(2), and one In(1) atom. In the second O site, O(5) is bonded in a trigonal planar geometry to three equivalent Ta(1) atoms. In the third O site, O(1) is bonded in a distorted bent 150 degrees geometry to three equivalent Ta(1) atoms. In the fourth O site, O(2) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to three equivalent Ta(1) atoms.