Crystal structure of the ionic liquid EtNH3NO3-insights into the thermal phase behavior of protic ionic liquids

Wesley A Henderson; Paul Fylstra; Hugh C De Long; Paul C Trulove; Simon Parsons

doi:10.1039/c2cp43079g

Crystal structure of the ionic liquid EtNH3NO3-insights into the thermal phase behavior of protic ionic liquids

Phys Chem Chem Phys. 2012 Dec 14;14(46):16041-6. doi: 10.1039/c2cp43079g.

Authors

Wesley A Henderson¹, Paul Fylstra, Hugh C De Long, Paul C Trulove, Simon Parsons

Affiliation

¹ Department of Chemistry, U.S. Naval Academy, Annapolis, MD 21402, USA. whender@ncsu.edu

PMID: 23099473
DOI: 10.1039/c2cp43079g

Abstract

The crystal structure of the salt ethylammonium nitrate (EtNH(3)NO(3)) has been determined. EtNH(3)NO(3) is one of the most widely studied protic ionic liquids (PILs)-ILs formed by proton transfer from a Brønsted acid to a Brønsted base. The structural features from the crystal structure, in concert with a Raman spectroscopic analysis of the ions, provide direct insight as to why EtNH(3)NO(3) melts below ambient temperature, while other related salts (such as EtNH(3)Cl) do not.