Repository: Freie Universität Berlin, Math Department

Short time dynamics of ionic liquids in AIMD based power spectra

Wendler, K. and Brehm, M. and Malberg, F. and Kirchner, B. and Delle Site, L. (2012) Short time dynamics of ionic liquids in AIMD based power spectra. Journal of Chemical Theory and Computation, 8 . p. 1570.

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Power spectra of several imidazolium-based ionic liquids, 1,3-dimethylimidazolium chloride, 1-ethyl-3-methylimidazolium thiocyanate, 1-ethyl-3-methylimidazolium dicyanamide 5, 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium thiocyanate, and 1-butyl-3-methylimidazolium dicyanamide, are presented based on ab initio molecular dynamics simulations. They provide an alternative tool of analysis of several electronic structure-based properties, in particular, those related to the strength of hydrogen bonding in liquids. Moreover, they can be employed to interpret experimental IR or Raman spectra, avoiding the additional calculations required for theoretical IR or Raman spectra. The obtained power spectra are shown to be in good agreement with experimental spectra, and electronic structure properties related to them are analyzed. Further, there are indications for a locality of the power spectra on a relatively short time scale of ≈10 ps or system size of about 8 ion pairs as already speculated in previous work.

Item Type:Article
Subjects:Physical Sciences > Physics
Divisions:Department of Mathematics and Computer Science > Institute of Mathematics > BioComputing Group
ID Code:1199
Deposited By: BioComp Admin
Deposited On:19 Feb 2013 13:41
Last Modified:21 Feb 2013 13:25

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