Materials Data on Co2Hg2H3(SO5)2 by Materials Project

Abstract

(CoHgSO5)4(H2)3 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional and consists of four molecular hydrogen molecules and one CoHgSO5 framework. In the CoHgSO5 framework, Co+1.50+ is bonded to five O2- atoms to form CoO5 trigonal bipyramids that share corners with three equivalent SO4 tetrahedra and an edgeedge with one CoO5 trigonal bipyramid. There are a spread of Co–O bond distances ranging from 1.99–2.18 Å. There are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a 2-coordinate geometry to six O2- atoms. There are a spread of Hg–O bond distances ranging from 2.10–2.90 Å. In the second Hg2+ site, Hg2+ is bonded in a distorted linear geometry to two O2- atoms. There are one shorter (2.06 Å) and one longer (2.10 Å) Hg–O bond lengths. S5+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with three equivalent CoO5 trigonal bipyramids. There are a spread of S–O bond distances ranging from 1.47–1.52 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Co+1.50+ and two Hg2+ atoms to form a mixture of edge and corner-sharing OCo2Hg2 tetrahedra. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Co+1.50+ and one S5+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one Hg2+ and one S5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Co+1.50+, one Hg2+, and one S5+ atom. In the fifth O2- site, O2- is bonded to two equivalent Co+1.50+ and two Hg2+ atoms to form a mixture of edge and corner-sharing OCo2Hg2 tetrahedra. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Co+1.50+ and one S5+ atom.