Redox properties of iron complexes with pentadentate bispidine ligands

• Verfasst von: Comba, Peter [VerfasserIn]
• Verfasst von: Wadepohl, Hubert [VerfasserIn]
• Verfasst von: Waleska, Arkadius [VerfasserIn]
• Titel: Redox properties of iron complexes with pentadentate bispidine ligands
• Verf.angabe: Peter Comba, Hubert Wadepohl and Arkadius Waleska
• Jahr: 2014
• Jahr des Originals: 2013
• Umfang: 7 S.
• Fussnoten: Published: 21 November 2013 ; Gesehen am 30.10.2020
• Titel Quelle: Enthalten in: Australian journal of chemistry
• Ort Quelle: Melbourne : CSIRO, 1948
• Jahr Quelle: 2014
• Band/Heft Quelle: 67(2014), 3, Seite 398-404
• ISSN Quelle: 1445-0038
• DOI: doi:10.1071/CH13454
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1737438151

Abstract

The solution coordination chemistry of iron complexes with the pentadentate bispidine ligands L1, L2, and L3 (dimethyl 9-oxo-2,4-di(pyridin-2-yl)-3,7-diazabicyclo[3.3.1]nonane-1,5-dicarboxylate derivatives) was examined. While in acetonitrile, (L1,2)FeII/III species have a preference for Cl- as co-ligand. The corresponding aqua and hydroxido complexes also prevail in the presence of Cl- in aqueous solution. The observed FeII/III potentials in water (cyclic voltammetry) and potentials of (L1-3)FeIV=O (buffered and unbuffered aqueous solutions) are strikingly similar, i.e. the latter are assigned to (L1-3)FeII/III potentials, and published potentials of FeIV=O complexes with other ligands with uncharged amine-pyridine donors, obtained by cyclic voltammetry, have to be considered with caution.