(NbO3)2HgHgO crystallizes in the cubic Fd-3m space group. The structure consists of one HgHgO framework and one NbO3 framework. In the HgHgO framework, Hg(1) is bonded in a distorted linear geometry to two equivalent O(1) atoms. O(1) is bonded to four equivalent Hg(1) atoms to form corner-sharing OHg4 tetrahedra. In the NbO3 framework, Nb(1) is bonded to six equivalent O(2) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 41°. O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms.
(NbO3)2HgHgO crystallizes in the cubic Fd-3m space group. The structure consists of one HgHgO framework and one NbO3 framework. In the HgHgO framework, Hg(1) is bonded in a distorted linear geometry to two equivalent O(1) atoms. Both Hg(1)-O(1) bond lengths are 2.29 Å. O(1) is bonded to four equivalent Hg(1) atoms to form corner-sharing OHg4 tetrahedra. In the NbO3 framework, Nb(1) is bonded to six equivalent O(2) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 41°. All Nb(1)-O(2) bond lengths are 1.99 Å. O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Nb(1) atoms.