Materials Data on ZrHg3(SCl3)2 by Materials Project

Abstract

ZrHg3(SCl3)2 is Krennerite-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Zr4+ is bonded to six Cl1- atoms to form ZrCl6 octahedra that share corners with twelve HgS2Cl4 octahedra. The corner-sharing octahedra tilt angles range from 41–71°. There are four shorter (2.49 Å) and two longer (2.51 Å) Zr–Cl bond lengths. There are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded to two equivalent S2- and four Cl1- atoms to form distorted HgS2Cl4 octahedra that share corners with four equivalent ZrCl6 octahedra and edges with four HgS2Cl4 octahedra. The corner-sharing octahedra tilt angles range from 41–71°. Both Hg–S bond lengths are 2.43 Å. There are a spread of Hg–Cl bond distances ranging from 3.14–3.39 Å. In the second Hg2+ site, Hg2+ is bonded to two equivalent S2- and four Cl1- atoms to form HgS2Cl4 octahedra that share corners with four equivalent ZrCl6 octahedra and edges with four equivalent HgS2Cl4 octahedra. The corner-sharing octahedra tilt angles range from 49–50°. Both Hg–S bond lengths are 2.45 Å. There are two shorter (3.06 Å) and two longer (3.10 Å) Hg–Cl bond lengths. S2- is bonded in a distorted trigonal non-coplanar geometry to three Hg2+ atoms. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Zr4+ and two equivalent Hg2+ atoms. In the second Cl1- site, Cl1- is bonded in a 1-coordinate geometry to one Zr4+ and two Hg2+ atoms. In the third Cl1- site, Cl1- is bonded in a 1-coordinate geometry to one Zr4+ and two Hg2+ atoms.