Iron corrolates: unambiguous chloroiron(III) (corrolate)(2-.) pi-cation radicals

Journal of Inorganic Biochemistry
F Ann WalkerRoberto Paolesse

Abstract

The structures, electron configurations, magnetic susceptibilities, spectroscopic properties, molecular orbital energies and spin density distributions, redox properties and reactivities of iron corrolates having chloride, phenyl, pyridine, NO and other ligands are reviewed. It is shown that with one very strong donor ligand such as phenyl anion the electron configuration of the metal is d(4)S=1 Fe(IV) coordinated to a (corrolate)(3-) anion, while with one weaker donor ligand such as chloride or other halide, the electron configuration is d(5)S=3/2 Fe(III) coordinated to a (corrolate)(2-.) pi-cation radical, with antiferromagnetic coupling between the metal and corrolate radical electron. Many of these complexes have been studied by electrochemical techniques and have rich redox reactivity, in most cases involving two 1-electron oxidations and two 1-electron reductions, and it is not possible to tell, from the shapes of cyclic voltammetric waves, whether the electron is added or removed from the metal or the macrocycle; often infrared, UV-Vis, or EPR spectroscopy can provide this information. (1)H and (13)C NMR spectroscopic methods are most useful in delineating the spin state and pattern of spin density distribution of the co...Continue Reading

Citations

Mar 13, 2014·Chemical Communications : Chem Comm·Giuseppe PomaricoRoberto Paolesse
Jun 25, 2009·Inorganic Chemistry·Manuela StefanelliRoberto Paolesse
Jun 7, 2012·Inorganic Chemistry·Manuela StefanelliRoberto Paolesse
Jul 15, 2006·Journal of Biological Inorganic Chemistry : JBIC : a Publication of the Society of Biological Inorganic Chemistry·Abhik Ghosh
Dec 24, 2016·Chemical Reviews·Yuanyuan FangKarl M Kadish
Apr 10, 2016·Chemistry : a European Journal·Abraham B AlemayehuAbhik Ghosh
Jun 23, 2016·Chemistry : a European Journal·Sumit GangulyAbhik Ghosh
May 16, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Hugo Vazquez-LimaAbhik Ghosh
Apr 11, 2018·Chemistry : a European Journal·Giuseppe PomaricoRoberto Paolesse
Dec 1, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Hans-Kristian NorheimAbhik Ghosh
Jun 21, 2008·Angewandte Chemie·Martin BröringChristian Kleeberg
Aug 14, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Amelia M AlbrettPenelope J Brothers
Oct 29, 2008·Chemistry : a European Journal·Shengfa YeFrank Neese

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