Materials Data on Rb2Hg3(GeS4)2 by Materials Project
Rb2Hg3(GeS4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Rb1+ is bonded in a 7-coordinate geometry to eight S2- atoms. There are a spread of Rb–S bond distances ranging from 3.38–3.98 Å. There are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded to four S2- atoms to form distorted HgS4 trigonal pyramids that share corners with four equivalent GeS4 tetrahedra and corners with two equivalent HgS4 trigonal pyramids. There are a spread of Hg–S bond distances ranging from 2.48–2.89 Å. In the second Hg2+ site, Hg2+ is bonded in a distorted linear geometry to four S2- atoms. There are two shorter (2.38 Å) and two longer (3.30 Å) Hg–S bond lengths. Ge4+ is bonded to four S2- atoms to form GeS4 tetrahedra that share corners with four equivalent HgS4 trigonal pyramids. There are a spread of Ge–S bond distances ranging from 2.21–2.29 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 2-coordinate geometry to two equivalent Rb1+, one Hg2+, and one Ge4+ atom. In the second S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Rb1+, two equivalent Hg2+, and one Ge4+ atom. In the third S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Rb1+, one Hg2+, and one Ge4+ atom. In the fourth S2- site, S2- is bonded in a 2-coordinate geometry to two equivalent Rb1+, two Hg2+, and one Ge4+ atom.