Oxovanadium(IV)-sulfite compounds: Synthesis and structural and physical studies

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dc.contributor.authorChilas, G. I.en
dc.contributor.authorMiras, H. N.en
dc.contributor.authorManos, M. J.en
dc.contributor.authorWoollins, J. D.en
dc.contributor.authorSlawin, A. M. Z.en
dc.contributor.authorStylianou, M.en
dc.contributor.authorKeramidas, A. D.en
dc.contributor.authorKabanos, T. A.en
dc.date.accessioned2015-11-24T16:43:45Z
dc.date.available2015-11-24T16:43:45Z
dc.identifier.issn0033-4545-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8734
dc.rightsDefault Licence-
dc.subjectoxovanadiumen
dc.subjectsulfiteen
dc.subjectvanadium clustersen
dc.subjectvanadium(iv)en
dc.subjectelectrochemistryen
dc.subjectstate coordination chemistryen
dc.subjectcrystal-structureen
dc.subjectmulticomponent polyanionsen
dc.subjectphosphatesen
dc.subjectclustersen
dc.subjecttetraoxoiodate(v)en
dc.subjectequilibriaen
dc.subjectcomplexesen
dc.subjectanionsen
dc.subjectcagesen
dc.titleOxovanadium(IV)-sulfite compounds: Synthesis and structural and physical studiesen
heal.abstractReaction of VIVOCl2 in strongly acidic aqueous solution with either (NH4)(2)SO3 or Na2SO3 and Bu4NBr at similar to 70 degrees C in the pH range 2.5-4.5 gives the clusters (NH4)(2){[V-4(IV)(mu(4)-O)(2)(mu(3)-OH)(2)]((VO)-O-IV)(2)(mu(3)-SO3)(4)O-4(H2O)(2)} and (n-Bu4N)(2){[V-4(IV)(mu(4)-O)(2)(mu(3)-OH)(2)]((VO)-O-IV)(2)(mu(3)-SO3)(4)O-4(H2O)(2)}, respectively. Reaction of (NH4VO3)-O-V with (NH4)(2)SO3 resulted in the isolation of the first compound. When the latter reaction is carried out in the presence of MgO, compound (NH4)[(VO)-O-IV(SO3)(1.5)H2O](infinity)center dot 2.5H(2)O was isolated instead. Compound (n-Bu4N)(2){[V-4(IV)(mu(4)-O)(2)(mu(3)-OH)(2)]((VO)-O-IV)(2)(mu(3)-SO3)(4)O-4(H2O)(2)} and (NH4)[(VO)-O-IV(SO3)(1.5)H2O](infinity)center dot 2.5H(2)O were characterized by X-ray structure analysis. The crystal structure of species (n-Bu4N)(2){IV4IV(mu(4)-O)(2)(mu(3)-OH)(2)]((VO)-O-IV)(2)(mu(3)-SO3)(4)O-4(H2O)(2)} revealed a unprecedented hexanuclear cluster consisting of a cubane core [M-4(mu(4)-O)(2)(mu(3)- OH)(2)] connected to two other metal atoms through the core oxo-groups and four mu(3)-SO3 bridges. Compound (NH4)[VIVO(SO3)(1.5)H2O](infinity)center dot 2.5H(2)O represents a rare example of an open-framework species prepared under mild conditions. Cyclic voltammetric examination of compound (n-Bu4N)(2){[IV4IV(mu(4)-O)(2)(mu(3)-OH)(2)]((VO)-O-IV)(2)(mu(3)-SO3)(4)O-4(H2O)(2)] revealed a redox process which was assigned to the oxidation of one core of vanadium(IV) to vanadium(V).en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1351/pac200577091529-
heal.identifier.secondary<Go to ISI>://000232113200003-
heal.identifier.secondaryhttp://pac.iupac.org/publications/pac/pdf/2005/pdf/7709x1529.pdf-
heal.journalNamePure and Applied Chemistryen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2005-
heal.publisherInternational Union of Pure and Applied Chemistryen
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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