Jump to main content
Jump to site search


Optical and XPS Evidence for the Electrochemical Generation of an N-Heterocyclic Carbene and its CS2 Adduct from the Ionic Liquid [bmim][PF6]

Abstract

Room temperature ionic liquids continue to be at the forefront of chemistry, covering a broad spectrum of research areas from electrochemistry and energy to catalysis and green chemistry. Therefore, it is of great value to fully understand chemical and electrochemical reactivity and stability of ionic liquids utilized in these applications. In this context, we have investigated the electrochemical generation of an N-heterocyclic carbene and its CS2 adduct from the ionic liquid [bmim][PF6], and X-ray photoelectron spectroscopy (XPS) proved to be a highly effective spectroscopic tool to study such systems. Initially, the dithiocarboxylate adduct was chemically synthesized as a reference compound starting from both [bmim][PF6] and [bmim][OAc], and characterized by HRMS, 1H- and 13C-NMR, FTIR, Visible and X-ray photoelectron spectroscopy. While a simple mixture of [bmim][PF6] and CS2 revealed no evidence of adduct formation, the application of an electrochemical stimulus led to the formation of the dithiocarboxylate adduct as evidenced optically and through the newly formed S2p peak in the XP spectrum. Further evidence for the electrochemical reduction of [bmim][PF6] to the corresponding N-heterocyclic carbene came from the XPS analysis via the appearance of a new N1s peak in the XP spectrum.

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Jun 2017, accepted on 10 Aug 2017 and first published on 11 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ01996C
Citation: New J. Chem., 2017, Accepted Manuscript
  •   Request permissions

    Optical and XPS Evidence for the Electrochemical Generation of an N-Heterocyclic Carbene and its CS2 Adduct from the Ionic Liquid [bmim][PF6]

    P. Aydogan Gokturk, S. E. Donmez, B. Ulgut, Y. E. Türkmen and S. Suzer, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01996C

Search articles by author

Spotlight

Advertisements