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dc.contributor.authorFarràs, Pau
dc.contributor.authorEscudero-Adán, Eduardo C.
dc.contributor.authorViñas, Clara
dc.contributor.authorTeixidor, Francesc
dc.date.accessioned2016-08-15T09:04:10Z
dc.date.available2016-08-15T09:04:10Z
dc.date.issued2014-07-25
dc.identifier.citationFarràs, Pau, Escudero-Adán, Eduardo C., Viñas, Clara, & Teixidor, Francesc. (2014). Controlling the Pirouetting Motion in Rotaxanes by Counterion Exchange. Inorganic Chemistry, 53(16), 8654-8661. doi: 10.1021/ic501246een_IE
dc.identifier.issn1520-510X
dc.identifier.urihttp://hdl.handle.net/10379/5967
dc.description.abstractA fine control of the pirouetting motion of rotaxanes was achieved by using a series of metallabisdicarbollides. The latter were used as anions in the protonated form of benzylic amide macrocycle-containing fumaramide rotaxanes. The present paper discusses the synthesis and the structural and dynamic characterizations of the first examples of anionic boron cluster-containing rotaxanes. To study the dynamic properties of such molecules, the pirouetting rate of the weakly coordinating boron cluster-containing rotaxanes with the more strongly coordinating trifluoroacetate anion (TFA–), which would form a close ion pair with the macrocycle, was measured using the exchange spectroscopy NMR technique. Our hypothesis was that the stronger the ion pair the lower the rate of rotation due to the presence of a bigger volume of solvent to be moved. The anion would act as an anchor for the pirouetting motion. Indeed, the results show the expected trend: the rotaxane with the closely coordinating TFA– anion pirouettes most slowly, and the most weakly coordinating hexabromoderivative of cobaltabisdicarbollide pirouettes the fastest.en_IE
dc.description.sponsorshipEuropean Union (FP7-OCEAN-2013-614168 and COST Action CM1302-Smart Inorganic Polymers), the Generalitat de Catalunya (2014/ SGR/149) and CSIC (I3P grant to P.F.).en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherAmerican Chemical Societyen_IE
dc.relation.ispartofInorganic Chemistryen
dc.subjectChemistryen_IE
dc.subjectRotaxanesen_IE
dc.subjectPirouettingen_IE
dc.subjectMetallacarboranesen_IE
dc.subjectEXSYen_IE
dc.subjectMolecular machineen_IE
dc.titleControlling the pirouetting motion in rotaxanes by counterion exchangeen_IE
dc.typeArticleen_IE
dc.date.updated2016-08-10T16:56:39Z
dc.identifier.doi10.1021/ic501246e
dc.local.publishedsourcehttp:/dx.doi.org/ 10.1021/ic501246een_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funder|~|
dc.internal.rssid9451785
dc.local.contactPau Farras. Email: pau.farrascosta@nuigalway.ie
dc.local.copyrightcheckedNo
dc.local.versionPUBLISHED
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