Materials Data on K2Hg(CN)4 by Materials Project
K2Hg(CN)4 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. K1+ is bonded to six equivalent N3- atoms to form distorted edge-sharing KN6 octahedra. All K–N bond lengths are 2.97 Å. Hg2+ is bonded to four equivalent C2+ atoms to form HgC4 tetrahedra that share corners with four equivalent NK3C tetrahedra. All Hg–C bond lengths are 2.21 Å. C2+ is bonded in a single-bond geometry to one Hg2+ and one N3- atom. The C–N bond length is 1.17 Å. N3- is bonded to three equivalent K1+ and one C2+ atom to form distorted NK3C tetrahedra that share a cornercorner with one HgC4 tetrahedra, corners with nine equivalent NK3C tetrahedra, and edges with three equivalent NK3C tetrahedra.
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