Materials Data on CaHgO2 by Materials Project
CaHgO2 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Ca2+ is bonded to six equivalent O2- atoms to form edge-sharing CaO6 octahedra. All Ca–O bond lengths are 2.39 Å. Hg2+ is bonded in a linear geometry to two equivalent O2- atoms. Both Hg–O bond lengths are 2.00 Å. O2- is bonded to three equivalent Ca2+ and one Hg2+ atom to form a mixture of distorted edge and corner-sharing OCa3Hg tetrahedra.
36 MATERIALS SCIENCE↗