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dc.contributor.authorPapatriantafyllopoulou, Constantinaen
dc.contributor.authorKizas, Christos M.en
dc.contributor.authorManos, Manolis J.en
dc.contributor.authorBoudalis, Athanassios K.en
dc.contributor.authorSanakis, Yiannisen
dc.contributor.authorTasiopoulos, Anastasios J.en
dc.creatorPapatriantafyllopoulou, Constantinaen
dc.creatorKizas, Christos M.en
dc.creatorManos, Manolis J.en
dc.creatorBoudalis, Athanassios K.en
dc.creatorSanakis, Yiannisen
dc.creatorTasiopoulos, Anastasios J.en
dc.description.abstractEight novel FeIII6 clusters with the amino-alcohol ligands 3-amino-1-propanol (apH), N-hydroxyethylpiperidine (N-hepipH), 2-hydroxyethylpiperidine (2-hepipH), 2-aminobenzylalcohol (2-abzaH), N-hydroxyethylmorpholine (N-hemorH) and ethanolamine (eaH), [Fe 6O2(OH)2L2((CH3) 3CCO2)10] (LH = apH, 1en
dc.description.abstractN-hepipH, 2en
dc.description.abstract2-hepipH, 3en
dc.description.abstract2-abzaH, 4}, [Fe6O2(OH)2(N-hemor) 2((CH3)3CCO2)8(CH 3CO2)2]·2MeCN (5·2MeCN), [Fe 6O2(OH)2(N-hemor)3((CH 3)3CCO2)9]·MeCN (6·MeCN), [Fe6O2(ea)6((CH 3)3CCO2)6(N3) 2]·2MeCN (7·2MeCN) and [Fe6O 3(N-hepip)3(PhCO2)9(PhCO 2H)2]·5MeCN (8·5MeCN) are reported. Compound 1 was prepared from the reaction of [Fe3O((CH3) 3CCO2)6(H2O)2(OH)]H 2O with apH in the presence of NaClO4 in MeCN. Accordingly, compounds 2-4 and 6 were prepared from reactions of trinuclear carboxylate Fe3+ clusters with the aminoalcohol ligands whereas the isolation of 5, involved also the addition of Fe(CH3CO 2)2 to the reaction mixture. By using a similar synthetic procedure, but in the presence of N3- ligand, compound 7 was isolated. Finally, the replacement of pivalates with benzoates in the reaction mixture yielded compound 8. To the best of our knowledge, 3, 5 and 6 are the first reported examples containing the ligands 2-hepipH and N-hemorH. Compounds 1-6 are composed of a [Fe6(μ3-O) 2(μ-OH)2]12+ structural core, where the two subunits are either arranged trans to each other (1-5), or they adopt the cis conformation (6). Compounds 7 and 8 possess the [Fe6(μ 3-O)2(μ-OR)6]8+ and [Fe 6(μ3-O)3]12+ structural cores respectively which display topologies rarely found in Fe cluster chemistry. Variable-temperature magnetic susceptibility measurements on powdered microcrystalline samples of 4, 6, 7 and 8 revealed the existence of antiferromagnetic exchange interactions which lead to an ST = 5 for 4 and 7, and diamagnetic ground states (ST = 0) for 6 and 8. Mössbauer spectroscopy studies on powdered microcrystalline samples of 7 and 8 confirmed that all iron ions of both complexes are in the Fe3+ (S = 5/2) state. The variation of the ligand environment in the various iron sites was reflected in their different quadrupole splitting parameters. © 2013 Elsevier Ltd. All rights reserved.en
dc.subjectMagnetic propertiesen
dc.subjectCrystal structuresen
dc.subjectIron(III) clustersen
dc.subjectMössbauer studiesen
dc.titleHexanuclear complexes from the use of a series of amino-alcohol ligands in Fe chemistryen
dc.description.endingpage230 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied SciencesΤμήμα Χημείας / Department of Chemistry
dc.description.notes<p>Cited By :4</p>en
dc.contributor.orcidTasiopoulos, Anastasios J. [0000-0002-4804-3822]
dc.contributor.orcidPapatriantafyllopoulou, Constantina [0000-0002-5652-7747]
dc.contributor.orcidBoudalis, Athanassios K. [0000-0002-8797-1170]

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