Cs2Ti(GeO3)3 crystallizes in the hexagonal P6_3/m space group. Cs(1) is bonded in a 9-coordinate geometry to three equivalent O(2) and six equivalent O(1) atoms. Ti(1) is bonded to six equivalent O(1) atoms to form TiO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with two equivalent Ti(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Cs(1), one Ti(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(1) and two equivalent Ge(1) atoms.
Cs2Ti(GeO3)3 crystallizes in the hexagonal P6_3/m space group. Cs(1) is bonded in a 9-coordinate geometry to three equivalent O(2) and six equivalent O(1) atoms. All Cs(1)-O(2) bond lengths are 3.27 Å. There are three shorter (3.16 Å) and three longer (3.28 Å) Cs(1)-O(1) bond lengths. Ti(1) is bonded to six equivalent O(1) atoms to form TiO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra. All Ti(1)-O(1) bond lengths are 1.98 Å. Ge(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with two equivalent Ti(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. Both Ge(1)-O(1) bond lengths are 1.74 Å. There is one shorter (1.80 Å) and one longer (1.82 Å) Ge(1)-O(2) bond length. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Cs(1), one Ti(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(1) and two equivalent Ge(1) atoms.