Materials Data on HgBr2 by Materials Project

Abstract

HgBr2 is trigonal omega-like structured and crystallizes in the trigonal P3 space group. The structure is two-dimensional and consists of one HgBr2 sheet oriented in the (0, 0, 1) direction. there are three inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded to six Br1- atoms to form edge-sharing HgBr6 octahedra. There are three shorter (2.81 Å) and three longer (2.94 Å) Hg–Br bond lengths. In the second Hg2+ site, Hg2+ is bonded to six Br1- atoms to form edge-sharing HgBr6 octahedra. There are three shorter (2.86 Å) and three longer (2.89 Å) Hg–Br bond lengths. In the third Hg2+ site, Hg2+ is bonded to six Br1- atoms to form edge-sharing HgBr6 octahedra. There are three shorter (2.82 Å) and three longer (2.93 Å) Hg–Br bond lengths. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted T-shaped geometry to three Hg2+ atoms. In the second Br1- site, Br1- is bonded in a distorted T-shaped geometry to three Hg2+ atoms.