Materials Data on HgCN2O3 by Materials Project
HgCN(NO3) crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. Hg2+ is bonded to one C4+, one N, and six equivalent O2- atoms to form distorted corner-sharing HgCNO6 hexagonal bipyramids. The Hg–C bond length is 2.07 Å. The Hg–N bond length is 2.12 Å. All Hg–O bond lengths are 2.75 Å. C4+ is bonded in a linear geometry to one Hg2+ and one N atom. The C–N bond length is 1.16 Å. There are two inequivalent N sites. In the first N site, N is bonded in a linear geometry to one Hg2+ and one C4+ atom. In the second N site, N is bonded in a trigonal planar geometry to three equivalent O2- atoms. All N–O bond lengths are 1.27 Å. O2- is bonded in a distorted single-bond geometry to two equivalent Hg2+ and one N atom.
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