%0 Journal Article
%A Klauke, Karsten
%A Zaitsau, Dzmitry H.
%A Bülow, Mark
%A He, Li
%A Klopotowski, Maximilian
%A Knedel, Tim-Oliver
%A Barthel, Juri
%A Held, Christoph
%A Verevkin, Sergey P.
%A Janiak, Christoph
%T Thermodynamic properties of selenoether-functionalized ionic liquids and their use for the synthesis of zinc selenide nanoparticles
%J Dalton transactions
%V 47
%N 14
%@ 0300-9246
%C London
%I Soc.
%M FZJ-2019-06110
%P 5083 - 5097
%D 2018
%X Three selenoether-functionalized ionic liquids (ILs) of N-[(phenylseleno)methylene]pyridinium (1), N-(methyl)- (2) and N-(butyl)-N‘-[(phenylseleno)methylene]imidazolium (3) with bis(trifluoromethanesulfonyl)imide anions ([NTf2]) were prepared from pyridine, N-methylimidazole and N-butylimidazole with in situ obtained phenylselenomethyl chloride, followed by ion exchange to give the desired compounds. The crystal structures of the bromide and tetraphenylborate salts of the above cations (1-Br, 2-BPh4 and 3-BPh4) confirm the formation of the desired cations and indicate a multitude of different supramolecular interactions besides the dominating Coulomb interactions between the cations and anions. The vaporization enthalpies of the synthesized [NTf2]-containing ILs were determined by means of a quartz-crystal microbalance method (QCM) and their densities were measured with an oscillating U-tube. These thermodynamic data have been used to develop a method for assessment of miscibility of conventional solvents in the selenium-containing ILs by using Hildebrandt solubility parameters, as well as for modeling with the electrolyte perturbed-chain statistical associating fluid theory (ePC-SAFT) method. Furthermore, structure–property relations between selenoether-functionalized and similarly shaped corresponding aryl-substituted imidazolium- and pyridinium-based ILs were analyzed and showed that the contribution of the selenium moiety to the enthalpy of vaporization of an IL is equal to the contribution of a methylene (CH2) group. An incremental approach to predict vaporization enthalpies of ILs by a group contribution method has been developed. The reaction of these ILs with zinc acetate dihydrate under microwave irradiation led to ZnSe nanoparticles of an average diameter between 4 and 10 nm, depending on the reaction conditions
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:29561056
%U <Go to ISI:>//WOS:000429743700037
%R 10.1039/C8DT00233A
%U https://juser.fz-juelich.de/record/867471