(NbO3)4Tl4O crystallizes in the cubic F-43m space group. The structure consists of four Tl4O clusters inside a NbO3 framework. In each Tl4O cluster, Tl(1) is bonded in a distorted single-bond geometry to one O(3) atom. O(3) is bonded in a tetrahedral geometry to four equivalent Tl(1) atoms. In the NbO3 framework, Nb(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 38°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms.
(NbO3)4Tl4O crystallizes in the cubic F-43m space group. The structure consists of four Tl4O clusters inside a NbO3 framework. In each Tl4O cluster, Tl(1) is bonded in a distorted single-bond geometry to one O(3) atom. The Tl(1)-O(3) bond length is 2.37 Å. O(3) is bonded in a tetrahedral geometry to four equivalent Tl(1) atoms. In the NbO3 framework, Nb(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 38°. All Nb(1)-O(1) bond lengths are 2.02 Å. All Nb(1)-O(2) bond lengths are 2.02 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms.