Hg2Os2O7 crystallizes in the cubic Fd-3m space group. The structure consists of one HgHgO framework and one OsO3 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 OsO3 framework, Os(1) is bonded to six equivalent O(2) atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles are 39°. O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Os(1) atoms.
Hg2Os2O7 crystallizes in the cubic Fd-3m space group. The structure consists of one HgHgO framework and one OsO3 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 2.25 Å. O(1) is bonded to four equivalent Hg(1) atoms to form corner-sharing OHg4 tetrahedra. In the OsO3 framework, Os(1) is bonded to six equivalent O(2) atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedral tilt angles are 39°. All Os(1)-O(2) bond lengths are 1.95 Å. O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Os(1) atoms.