Materials Data on RbTbS2 by Materials Project

Abstract

RbTbS2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Rb1+ is bonded to six equivalent S2- atoms to form distorted RbS6 octahedra that share corners with six equivalent TbS6 octahedra, edges with six equivalent RbS6 octahedra, and edges with six equivalent TbS6 octahedra. The corner-sharing octahedral tilt angles are 13°. All Rb–S bond lengths are 3.35 Å. Tb3+ is bonded to six equivalent S2- atoms to form TbS6 octahedra that share corners with six equivalent RbS6 octahedra, edges with six equivalent RbS6 octahedra, and edges with six equivalent TbS6 octahedra. The corner-sharing octahedral tilt angles are 13°. All Tb–S bond lengths are 2.79 Å. S2- is bonded to three equivalent Rb1+ and three equivalent Tb3+ atoms to form a mixture of edge and corner-sharing SRb3Tb3 octahedra. The corner-sharing octahedral tilt angles are 0°.