A new ligand H4Lox and its iron(III) complex as a platform for the development of heterotrimetallic complexes

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dc.creatorRoberta Nunes Firmo Cardoso
dc.creatorIsabela Cristina Aguiar de Souza Borguignon
dc.creatorFabio da Silva Miranda
dc.creatorCarlos Basílio Pinheiro
dc.creatorJackson Antonio Lamounier Camargos Resende
dc.creatorMauricio Lanznaster
dc.date.accessioned2023-07-17T15:07:05Z
dc.date.accessioned2025-09-09T00:19:53Z
dc.date.available2023-07-17T15:07:05Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipFAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
dc.identifier.doihttps://doi.org/10.1016/j.poly.2016.06.022
dc.identifier.issn1873-3719
dc.identifier.urihttps://hdl.handle.net/1843/56383
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPolyhedron
dc.rightsAcesso Restrito
dc.subjectFerro
dc.subjectEletroquímica
dc.subjectAnálise espectral
dc.subject.otherIron
dc.subject.otherMultimetallic complexes
dc.subject.otherElectrochemistry
dc.subject.otherSpectroscopy
dc.titleA new ligand H4Lox and its iron(III) complex as a platform for the development of heterotrimetallic complexes
dc.typeArtigo de periódico
local.citation.epage611
local.citation.spage604
local.citation.volume117
local.description.resumoThe combination of multiple metal ions of different nature, in a single coordination compound, can provide a unique set of properties suitable for applications such as mimetization of the active site of enzymatic systems, development of new molecular magnetic materials and catalysts for photoinduced water splitting. Nonetheless, the preparation of heteromultimetallic complexes, in a controlled way, is a challenging task. In this work, we present a new ligand, H4Lox, designed as a platform for the synthesis of heterotrimetallic complexes. From H4Lox and its precursor H2L, two mononuclear iron(III) complexes, [Fe(L)]NO3·MeOH·2H2O (1) [Fe(H2Lox)]NO3·XH2O (2) were synthesized and fully characterized. The structure of 2 revealed a N2O2 vacant coordination site comprised by two phenolate oxygen atoms and two oxime nitrogen atoms. DFT calculations and ESI-MS data demonstrate that complex 2 can accommodate two additional metal ions, in a stable heterotrimetallic complex. The effect of the ortho substituents of the phenolate groups (CHO and CNOH) in the electronic states of 1 and 2, respectively, was evaluated by UV–Vis spectroscopy, cyclic voltammetry and DFT calculations. A free energy correlation was found between the calculated electrophilicity index ω and the experimental half wave potentials of 1, 2 and their analogous complex [Fe(bbpen-Me)]+ [33]. The electrophilicity index ω was used to estimate the FeIII/FeII redox potential of the hypothetical [FeZnCl2(Lox)Ga(tpa)]2+ complex.
local.identifier.orcidhttps://orcid.org/0000-0001-9977-242X
local.identifier.orcidhttps://orcid.org/0000-0002-8674-1779
local.identifier.orcidhttps://orcid.org/0000-0002-5366-4156
local.identifier.orcidhttps://orcid.org/0000-0003-0477-0152
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S027753871630256X?via%3Dihub

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