Differences in ion interactions for isoelectronic ionic liquid homologs

Heather Y. Lee, Hideaki Shirota, Ed Castner

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Specific cation-anion interactions for two pairs of isoelectronic ionic liquids (ILs) have been investigated using nuclear Overhauser effect (NOE) 2D NMR methods to explore proximities between ions. The four ILs comprise the bis(trifluoromethylsulfonyl)amide anion paired with the following cations: triethyloctylammonium, (2-ethoxyethoxy)ethyltriethylammonium, triethyloctylphosphonium, and (2-ethoxyethoxy)ethyltriethylphosphonium. Substantial interactions are observed between the anion 19F nuclei and all of the protons on the triethyl chains for each of the four cationic head groups. Significantly different interactions are observed for each of the four cationic tail groups and the anions.

Original languageEnglish
Pages (from-to)1477-1483
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume4
Issue number9
DOIs
Publication statusPublished - May 2 2013

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Ionic Liquids
Ionic liquids
Anions
Negative ions
Ions
anions
liquids
Cations
ions
Positive ions
interactions
Overhauser effect
cations
Amides
amides
Protons
proximity
Nuclear magnetic resonance
nuclear magnetic resonance
nuclei

Keywords

  • 2D NMR
  • HOESY
  • ion interactions
  • ionic liquid structure
  • NOE

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Differences in ion interactions for isoelectronic ionic liquid homologs. / Lee, Heather Y.; Shirota, Hideaki; Castner, Ed.

In: Journal of Physical Chemistry Letters, Vol. 4, No. 9, 02.05.2013, p. 1477-1483.

Research output: Contribution to journalArticle

Lee, Heather Y. ; Shirota, Hideaki ; Castner, Ed. / Differences in ion interactions for isoelectronic ionic liquid homologs. In: Journal of Physical Chemistry Letters. 2013 ; Vol. 4, No. 9. pp. 1477-1483.
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