TY  - JOUR
AU  - Klauke, Karsten
AU  - Zaitsau, Dzmitry H.
AU  - Bülow, Mark
AU  - He, Li
AU  - Klopotowski, Maximilian
AU  - Knedel, Tim-Oliver
AU  - Barthel, Juri
AU  - Held, Christoph
AU  - Verevkin, Sergey P.
AU  - Janiak, Christoph
TI  - Thermodynamic properties of selenoether-functionalized ionic liquids and their use for the synthesis of zinc selenide nanoparticles
JO  - Dalton transactions
VL  - 47
IS  - 14
SN  - 0300-9246
CY  - London
PB  - Soc.
M1  - FZJ-2019-06110
SP  - 5083 - 5097
PY  - 2018
AB  - 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
LB  - PUB:(DE-HGF)16
C6  - pmid:29561056
UR  - <Go to ISI:>//WOS:000429743700037
DO  - DOI:10.1039/C8DT00233A
UR  - https://juser.fz-juelich.de/record/867471
ER  -