Issue 42, 2009

The electrochemical inspection of the redox activity of sumanene and its concave CpFe complex

Abstract

The redox properties of sumanene C21H12 and its concave Fe(II) complex [(η5-C5H5)Fe(η6-C21H12)]+ have been elucidated through an electrochemical study in non-aqueous solvents, i.e. N,N-dimethylformamide (DMF) and acetonitrile (MeCN). The electron transfer activity of sumanene can be depicted as an irreversible oxidation and a partially chemically reversible one-electron reduction, both processes being located in proximity of the respective discharges of the solvents.

The Fe(II) complex [(η5-C5H5)Fe(η6-C21H12)](PF6) in turn exhibits the Fe(II)/Fe(I) reduction, which in both DMF and MeCN solvents displays features of partial chemical reversibility, coupled to decomposition of the corresponding Fe(I) species [(η5-C5H5)Fe(η6-C21H12)] to fragments which, upon reoxidation, regenerate for the most part the original Fe(II)-sumanene species. In fact, among the fragments produced by exhaustive reduction, ESI measurements allowed the detection of ferrocene, the oxidation of which probably triggers the partial regeneration of the original Fe(II) complex. The pertinent PM6 semiempirical study accounts for the limited chemical reversibility of the redox processes exhibited by both sumanene and its Fe(II) complex.

Graphical abstract: The electrochemical inspection of the redox activity of sumanene and its concave CpFe complex

Supplementary files

Article information

Article type
Paper
Submitted
01 Jun 2009
Accepted
30 Jul 2009
First published
03 Sep 2009

Dalton Trans., 2009, 9192-9197

The electrochemical inspection of the redox activity of sumanene and its concave CpFe complex

P. Zanello, S. Fedi, F. F. de Biani, G. Giorgi, T. Amaya, H. Sakane and T. Hirao, Dalton Trans., 2009, 9192 DOI: 10.1039/B910711H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements