Materials Data on KSnS2 by Materials Project

Dataset · Thu Jul 16 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1306369· OSTI ID:1306369

KSnS2 is Caswellsilverite-like structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. K1+ is bonded to six S2- atoms to form distorted KS6 pentagonal pyramids that share corners with nine equivalent SnS6 octahedra, edges with three equivalent SnS6 octahedra, edges with six equivalent KS6 pentagonal pyramids, and a faceface with one SnS6 octahedra. The corner-sharing octahedra tilt angles range from 11–47°. There are three shorter (3.22 Å) and three longer (3.24 Å) K–S bond lengths. Sn3+ is bonded to six S2- atoms to form SnS6 octahedra that share corners with nine equivalent KS6 pentagonal pyramids, edges with six equivalent SnS6 octahedra, edges with three equivalent KS6 pentagonal pyramids, and a faceface with one KS6 pentagonal pyramid. There are three shorter (2.76 Å) and three longer (2.77 Å) Sn–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to three equivalent K1+ and three equivalent Sn3+ atoms to form a mixture of distorted edge, face, and corner-sharing SK3Sn3 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 0–42°. In the second S2- site, S2- is bonded to three equivalent K1+ and three equivalent Sn3+ atoms to form a mixture of edge, face, and corner-sharing SK3Sn3 octahedra.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1306369
• Report Number(s): mp-7794
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
K-S-Sn
KSnS2
crystal structure