de Lima, Silvania MarileneGomez, Jorge AntonioBarros, Valeria P.Vertuan, Greice de S.Assis, Marilda das DoresGraeff, Carlos Frederico de Oliveira [UNESP]Demets, Gregoire Jean-Francois2014-05-202014-05-202010-10-14Polyhedron. Oxford: Pergamon-Elsevier B.V. Ltd, v. 29, n. 15, p. 3008-3013, 2010.0277-5387http://hdl.handle.net/11449/8475This work presents a new oxovanadium(IV)-cucurbit[6]uril complex, which combines the catalytic properties of the metal ion with the size-excluding properties of the macrocycle cavity. In this coordination compound, the VO(2-) ions are coordinated to the oxygen atoms located at the rim of the macrocycle in slightly distorted square-pyramidal configurations, which are in fact C(2v) symmetries. This combination results in a size-selective heterogeneous catalyst, which is able to oxidize linear alkanes like n-pentane at room temperature, but not styrene, cyclohexane or z-cyclooctene, which are too big to enter the cucurbit[6]uril cavity. The results presented here contribute to understanding the mechanism of alkane catalytic oxidation by oxovanadium(IV) complexes. (C) 2010 Elsevier Ltd. All rights reserved.3008-3013engCucurbit[6]urilOxovanadium(IV)Coordination compoundSize-selective catalysisArtigo10.1016/j.poly.2010.08.001WOS:000283978900018Acesso restrito0000-0003-0162-8273