Study of 1,3-dimethylimidazolium chloride with electronic structure methods and force field approaches

Christian Krekeler*, Jochen Schmidt, Yuan Yuan Zhao, Baofu Qiao, Robert Berger, Christian Holm, Luigi Delle Site

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The 1,3-dimethyl imidazolium chloride [MMIM]Cl is an example of ionic liquid and frequently studied in literature. In this article [MMIM]Cl is studied using an ab initio method [second order Møller-Plesset perturbation theory (MP2), density functional theory (DFT)] and classical force field approach with the aim of looking at some properties on different scales. Selected properties are studied with the different methods and compared to each other. The comparison between the results obtained with MP2 and the DFT approach allows us to comment on the validity of this latter and thus on its employment in larger systems. On the other hand, the comparison between the DFT results and those of the classical approach allows us to test the reproducibility of electrostatic properties by this latter approach. As the results show the used DFT setup is rather satisfactory, while the classical force fields are describing the electrostatic properties in an insufficient way. A revision (improvement) of the classical force fields is at this stage necessary in order to capture the electrostatic properties in a proper way.

Original languageEnglish (US)
Article number174503
JournalJournal of Chemical Physics
Volume129
Issue number17
DOIs
StatePublished - Nov 17 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Study of 1,3-dimethylimidazolium chloride with electronic structure methods and force field approaches'. Together they form a unique fingerprint.

Cite this