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Issue 3, 1991
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An investigation of the co-ordination properties of (2,3,7,8,12,13,17,18-octamethylcorrolato)iron(III) by nuclear magnetic resonance spectroscopy

Silvia Licoccia,  Maurizio Paci,  Roberto Paolesse  and  Tristano Boschi 

Abstract

The reactivity of (2,3,7,8,12,13,17,18-octamethylcorrolato)iron(III) towards axial ligands such as pyridine, chloride and isocyanide has been studied by means of optical and 1H NMR spectroscopy. Relaxation rate measurements and analysis of the temperature dependence of the isotropic shifts are indicative of an S=½ spin state for the complex in chloroform solution, whilst its pyridine adduct exhibits a mixed spin state for the metal atom. The existence in chloroform solution of two different species related to a chloride binding equilibrium has been demonstrated by a saturation transfer experiment. Both 1H NMR and electronic spectra of the complex are indicative of the formation of molecular complexes between different macrocyclic rings competing with axial ligation.

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Article type: Paper
DOI: 10.1039/DT9910000461
Citation: J. Chem. Soc., Dalton Trans., 1991,0, 461-466
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    An investigation of the co-ordination properties of (2,3,7,8,12,13,17,18-octamethylcorrolato)iron(III) by nuclear magnetic resonance spectroscopy

    S. Licoccia, M. Paci, R. Paolesse and T. Boschi, J. Chem. Soc., Dalton Trans., 1991, 0, 461
    DOI: 10.1039/DT9910000461

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