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Characterization of iron(III)porphyrin-hydroxo complexes in organic media through UV-Vis and EPR spectroscopies

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dc.contributor.authorManso, CMCP
dc.contributor.authorNeri, C. R.
dc.contributor.authorVidoto, E. A.
dc.contributor.authorSacco, H. C.
dc.contributor.authorCiuffi, K. J.
dc.contributor.authorIwamoto, L. S.
dc.contributor.authorIamamoto, Y.
dc.contributor.authorNascimento, O. R.
dc.contributor.authorSerra, O. A.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Franca
dc.date.accessioned2014-05-20T15:27:28Z
dc.date.available2014-05-20T15:27:28Z
dc.date.issued1999-01-01
dc.description.abstractThe interaction of OH- with Fe(TPP)(+), Fe(TDCPP)(+), Fe(TMP)(+) and Fe(TFPP)(+) in 1,2-dichloroethane was studied by titrating FeP solutions with aliquots of a solution of tetrabutylammonium hydroxide in acetonitrile. The number of OH- ions (n) coordinated to the FeP and the stability constants (beta(n)) for the FeP-OH- complexes were calculated from UV-Vis absorbance data and iron spin states were determined through EPR spectroscopy, Fe(TMP) (+) forms a high-spin mono-hydroxo complex, while Fe(TPP)I and Fe(TDCPP)(+) form high-spin bis-hydroxo complexes. To our knowledge, this is the first time that the formation of bis-hydroxo complexes from Fe(TPP) (+) has been reported, and this was possible because the studies were carried out in basic organic media, In this same medium, Fe-III-Fe-II reduction upon OH- addition to Fe(TFPP) (+) was observed, without concomitant formation of the mu-oxo dimeric species [Fe(TFPP)](2)O. (C) 1999 Elsevier B.V., All rights reserved.en
dc.description.affiliationUniv São Paulo, Dept Chem, FFCLRP, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Phys Inst Sao Carlos, Sao Carlos, SP, Brazil
dc.description.affiliationUNESP, Inst Chem, Araraquara, SP, Brazil
dc.description.affiliationUniv Franca, Dept Chem, Franca, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Chem, Araraquara, SP, Brazil
dc.format.extent85-92
dc.identifierhttp://dx.doi.org/10.1016/S0162-0134(98)10093-4
dc.identifier.citationJournal of Inorganic Biochemistry. New York: Elsevier B.V., v. 73, n. 1-2, p. 85-92, 1999.
dc.identifier.doi10.1016/S0162-0134(98)10093-4
dc.identifier.issn0162-0134
dc.identifier.urihttp://hdl.handle.net/11449/37437
dc.identifier.wosWOS:000079589800010
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Inorganic Biochemistry
dc.relation.ispartofjcr3.063
dc.relation.ispartofsjr0,743
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectporphyrinspt
dc.subjectironporphyrinspt
dc.subjecttetrabutylammonium hydroxidept
dc.subjecttitrationspt
dc.titleCharacterization of iron(III)porphyrin-hydroxo complexes in organic media through UV-Vis and EPR spectroscopiesen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.orcid0000-0003-0761-5086[7]
unesp.author.orcid0000-0001-8270-0286[5]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt

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Araraquara - IQAR - Instituto de Química