Materials Data on HgC2Br3N by Materials Project
HgBr2C2NBr crystallizes in the monoclinic P2/c space group. The structure is zero-dimensional and consists of two mercuric bromide molecules, eight C2NBr clusters, and two HgBr2 clusters. In each C2NBr cluster, there are two inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a water-like geometry to one N3- and one Br1- atom. The C–N bond length is 1.33 Å. The C–Br bond length is 1.90 Å. In the second C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.21 Å. N3- is bonded in a linear geometry to two C2+ atoms. Br1- is bonded in a single-bond geometry to one C2+ atom. In each HgBr2 cluster, there are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a 2-coordinate geometry to three Br1- atoms. There are a spread of Hg–Br bond distances ranging from 2.45–3.35 Å. In the second Hg2+ site, Hg2+ is bonded in a linear geometry to two equivalent Br1- atoms. Both Hg–Br bond lengths are 2.45 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted bent 120 degrees geometry to two Hg2+ atoms. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Hg2+ atom. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Hg2+ atom.