Crystal Structures of Polymerized LiCl and dimethyl sulfoxide in the form of {2LiCl•3DMSO}∞ and {LiCl•DMSO}∞

Conference: 2022: 72nd ACA Annual Meeting
Nichole Valdez Poster Author
Sandia National Laboratories
Albuquerque, NM 
David Herman Additional Author
Sandia National Laboratories
Martin Nemer Additional Author
Sandia National Laboratories
Mark Rodriguez Additional Author
Sandia National Laboratories
Eric Allcorn Additional Author
Sandia National Laboratories
07/31/2022: 5:30 PM - 7:30 PM
Poster Session 
Portland Marriott Downtown Waterfront 
Room: Exhibit Hall 


Two novel LiCl·DMSO polymer structures were created by combining dry LiCl salt with dimethyl sulfoxide (DMSO). The first phase that forms has very small block-shaped crystals (<0.08 mm) that are monoclinic with a 2 LiCl : 3 DMSO ratio. When the solution is placed on a laboratory glass slide, the DMSO evaporates and a second phase begins to form with a plate-shaped crystal morphology. After ~20 minutes, large (>0.20 mm) crystals form with an octahedron morphology. The plate crystals and the octahedron crystals are the same tetragonal structure with a 1 LiCl : 1 DMSO ratio. We report these structures and compare them to other known LiCl·solvent compounds.

Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA0003525.

This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government.