Materials Data on RbSnS2 by Materials Project
RbSnS2 is Caswellsilverite-like structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. Rb1+ is bonded in a 6-coordinate geometry to six S2- atoms. All Rb–S bond lengths are 3.35 Å. Sn3+ is bonded to six S2- atoms to form edge-sharing SnS6 octahedra. All Sn–S bond lengths are 2.78 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent Rb1+ and three equivalent Sn3+ atoms. In the second S2- site, S2- is bonded to three equivalent Rb1+ and three equivalent Sn3+ atoms to form edge-sharing SRb3Sn3 octahedra.