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@proceedings{845766,
author = {Kolman, Viktor and Marek, Radek and Střelcová, Zora and Kulhánek, Petr and Nečas, Marek and Švec, Jan and Šindelář, Vladimír},
booktitle = {10th International Conference on Calixarenes},
keywords = {cucurbiturils;host-guest systems;ionic liquids;supramolecular chemistry},
language = {eng},
title = {Charge Localization on Imidazolium Ring upon Complexation with Cucurbit[6]uril},
url = {http://www.calix2009.org},
year = {2009}
}
TY - CONF
ID - 845766
AU - Kolman, Viktor - Marek, Radek - Střelcová, Zora - Kulhánek, Petr - Nečas, Marek - Švec, Jan - Šindelář, Vladimír
PY - 2009
TI - Charge Localization on Imidazolium Ring upon Complexation with Cucurbit[6]uril
KW - cucurbiturils;host-guest systems;ionic liquids;supramolecular chemistry
UR - http://www.calix2009.org
N2 - In this study, we demonstrate the formation of 1:1 inclusion complexes between imidazolium guests and CB6. We describe two different binding modes between CB6 and 1-alkyl-3-methylimidazoliums depending on the length of aliphatic chains of the guests. Unusual chemical shifts for some of the guest protons were recorded in the 1H NMR spectra upon the complexation with CB6. We explain these shifts by the polarization of the guest molecules upon the formation of the complex. While positive charge is located on one of the nitrogen atoms in imidazolium ring due to the interaction with CB6 portal, free electron pair remains on the second nitrogen.
ER -
KOLMAN, Viktor, Radek MAREK, Zora STŘELCOVÁ, Petr KULHÁNEK, Marek NEČAS, Jan ŠVEC a Vladimír ŠINDELÁŘ. Charge Localization on Imidazolium Ring upon Complexation with Cucurbit[6]uril. In \textit{10th International Conference on Calixarenes}. 2009.
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