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dc.contributor.authorCruz, Carlos-
dc.contributor.authorVega Carvallo, Andrés Igor-
dc.contributor.authorSpodine, Evgenia-
dc.contributor.authorEscuer Fité, Albert-
dc.contributor.authorMarco, José F.-
dc.contributor.authorMenéndez, Nieves-
dc.contributor.authorVenegas Yazigi, Diego-
dc.contributor.authorParedes García, Verónica-
dc.description.abstractIn this work, we report a new octanuclear cluster based on FeIII and the ligand 1H-imidazole-4,5-dicarboxylic acid, [Et3NH]12[Fe8(IDC)12]·10DMF·13H2O (1), with a metal core containing eight FeIII connected by only one type of organic ligand. A peak at 573 m/z in the mass spectra of the compound suggests the adduct species {[Fe8(IDC)12]+8H}4-. By X-ray photoelectron spectroscopy, the oxidation state of the iron cation was confirmed to be 3+, also identifying the presence of a quaternary nitrogen species, which act as a countercation of the anionic metal core [Fe8(IDC)12]12-. Mössbauer spectra recorded at different temperatures show an isomer shift and quadrupole splitting parameters that confirm the existence of only FeIII-HS in the structure of 1. X-ray analysis reveals that compound 1 crystallizes in the orthorhombic system space group Ibam, confirming a molecular cluster structure with an almost regular cube as geometry, with the FeIII atoms located at the corners of the cube and connected by μ-1κ2 N,O:2κ2 N',O‴-IDC3- bridges. Additionally, the magnetic measurements reveal a weak antiferromagnetic coupling in the Fe8 III coordination cluster (J = -3.8 cm-1). To the best of our knowledge, 1 is the first member of the family of cubes assembled with 1H-imidazole-4,5-dicarboxylic acid and FeIII cation, exhibiting high pH stability over a broad pH range, making it an ideal candidate for the design of supramolecular structures and metal-organic frameworks.-
dc.format.extent10 p.-
dc.publisherAmerican Chemical Society-
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofACS Omega , 2020, vol. 5, num. 35, p. 22238-22247-
dc.rights(c) American Chemical Society, 2020-
dc.subject.classificationEspectrometria de masses-
dc.subject.classificationEspectroscòpia de raigs X-
dc.subject.otherMass spectrometry-
dc.subject.otherX-ray spectroscopy-
dc.titleNew highly charged iron(III) metal-organic cube stabilized by a bulky amine.-
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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