Heterometallic Fe-III-Ce-IV complexes from the use of aliphatic aminoalcohol ligands

Απλή σελίδα τεκμηρίου
dc.contributor.authorKizas, C. M.en
dc.contributor.authorPapatriantafyllopoulou, C.en
dc.contributor.authorManos, M. J.en
dc.contributor.authorTasiopoulos, A. J.en
dc.date.accessioned2015-11-24T16:38:48Z
dc.date.available2015-11-24T16:38:48Z
dc.identifier.issn0277-5387-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8086
dc.rightsDefault Licence-
dc.subjectiron(iii) clustersen
dc.subjectcerium(iv) clustersen
dc.subject3d-4f clustersen
dc.subjectaliphatic aminoalcoholsen
dc.subjectcrystal structuresen
dc.subjectmagnetic propertiesen
dc.subjectsingle-molecule magnetsen
dc.subjectfe-57 mossbauer-spectroscopyen
dc.subjectmetal-lanthanide complexesen
dc.subjecthigh-spin moleculesen
dc.subjecthigh-nuclearityen
dc.subjectground-stateen
dc.subjectsusceptibility measurementsen
dc.subjectcoordination polymersen
dc.subjectcluster chemistryen
dc.subjectoxidation-statesen
dc.titleHeterometallic Fe-III-Ce-IV complexes from the use of aliphatic aminoalcohol ligandsen
heal.abstractSix novel heteronuclear Fe-III/Ce-IV clusters with the ligands 3-amino-1-propanol (Hap) and 2-(hydroxymethyl)piperidine (Hhmpip) [(Fe4Ce6O8)-Ce-III-O-IV(L)(4)((CH3)(3)CCO2)(12)(RCO2)(4)] = CH3, L = ap(-), 1; R = ClCH2, L = ap(-), 2; R = BrCH2, L = ap(-), 3; R = C2H5, L = ap(-), 4; R = CH3, L = hmpip(-), 5) and aFe(2)Ce(2)Na(2)O(2) ((CH3)(3)CCO2)(8)(N-3)(2)(aP)(2)])(infinity). (6)(infinity) are reported. Compounds 1-5 were prepared from reactions of preformed trinuclear Fe3+ clusters with the ligands, in the presence of (NH4)(2)Ce(NO3)(5) and RCO2M (R = CH3, M+ = H+, 1; R = ClCH2, M+ = Na+, 2; R = BrCH2, M+ = Na+, 3; R = CH3CH2, M+ = Na+, 4; R = CH3, M+ = H+, 5) in 1:5:1:1 molar ratio in CH3CN. Complex (6 center dot 2CH(3)CN)(infinity) was prepared by a similar to the above described synthetic procedure that involved the use of NaN3 instead of RCO2M. To the best of our knowledge, compounds 1-6 are the initial examples of Fe-III/Ce-IV species and rare examples of metal complexes with the ligands Hap and Hhmpip. The structures of 1-5 are composed of a distorted supertetrahedral [(Fe4Ce6IV)-Ce-III(mu(4)-O)(4)(mu(3)-O)(4)](20+) structural core, while (6 center dot 2CH(3)CN)(infinity) displays a [(Fe2Ce2Na2)-Ce-III-Na-IV(mu(4)-O)(2)](12+) core consisting of two tetrahedral units sharing one common edge. These two structural types are rather uncommon for mixed metal 3d/4f compounds although they are well-known for 3d metal cluster chemistry. Variable temperature dc magnetic susceptibility studies on powdered microcrystalline samples of 1 and (6 center dot 2CH(3)CN)(infinity), revealed the presence of weak antiferromagnetic interactions as expected on the basis of the large separations (>6 angstrom) between the paramagnetic Fe3+ ions in both complexes. (C) 2012 Elsevier Ltd. All rights reserved.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1016/j.poly.2012.09.007-
heal.identifier.secondary<Go to ISI>://000318747100042-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0277538712006808/1-s2.0-S0277538712006808-main.pdf?_tid=6d1a5b26-3636-11e3-b216-00000aacb362&acdnat=1381909493_186e2b7a480fca8015e3292a20bdf735-
heal.journalNamePolyhedronen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2013-
heal.publisherElsevieren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

Αρχεία

Φάκελος/Πακέτο αδειών

Προβολή: 1 - 1 of 1
Μικρογραφία εικόνας
Ονομα:
license.txt
Μέγεθος:
1.74 KB
Μορφότυπο:
Item-specific license agreed upon to submission
Περιγραφή:
Κατεβάστε

Συλλογές

Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ