Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/93663
Type: Artigo de periódico
Title: Identification Of 1,3-dialkylimidazoiium Salt Supramolecular Aggregates In Solution
Author: Consorti C.S.
Suarez P.A.Z.
De Souza R.F.
Burrow R.A.
Farrar D.H.
Lough A.J.
Loh W.
Da Suva L.H.M.
Dupont J.
Abstract: The nature of the interactions between 1,3-dialkylimidazolium cations and noncoordinating anions such as tetrafluoroborate, hexafluorophosphate, and tetraphenylborate has been studied in the solid state by X-ray diffraction analysis and in solution by 1H NMR spectroscopy, conductivity, and microcalorimetry. In the solid state, these compounds show an extended network of hydrogen-bonded cations and anions in which one cation is surrounded by at least three anions and one anion is surrounded by at least three imidazolium cations. In the pure form, imidazolium salts are better described as polymeric supramolecules of the type {[(DAI)3(X)]2+[(DAI)(X) 3]2-}n (where DAI is the dialkylimidazolium cation and X is the anion) formed through hydrogen bonds of the imidazolium cation with the anion. In solution, this supramolecular structural organization is maintained to a great extent, at least in solvents of low dielectric constant, indicating that mixtures of imidazolium ionic liquids with other molecules can be considered as nanostructured materials. This model is very useful for the rationalization of the majority of the unusual behavior of the ionic liquids. © 2005 American Chemical Society.
Editor: 
Rights: fechado
Identifier DOI: 10.1021/jp0452709
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-15944398257&partnerID=40&md5=c2d1bdcbed44518745a66477337c93a9
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-15944398257.pdf466.31 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.