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The electrochemistry of some ferrocene derivatives: redox potential and substituent effects
Author(s) -
Batterjee Suzan M.,
Marzouk M. I.,
Aazab M. E.,
ElHashash M. A.
Publication year - 2003
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.414
Subject(s) - chemistry , ferrocene , cyclic voltammetry , redox , substituent , electrochemistry , medicinal chemistry , platinum , voltammetry , hydrazine (antidepressant) , hydrate , inorganic chemistry , polymer chemistry , photochemistry , organic chemistry , electrode , catalysis , chromatography
Abstract Fifteen ferrocene derivatives I–IX (four of which have been prepared for the first time: II, IIIf, V and VIII) have been prepared by Friedel–Crafts acetylation, Claisen condensation, Michael reaction, and ring closure by hydrazine hydrate. The anodic behaviour of these compounds has been studied by cyclic voltammetry at a platinum electrode in an aprotic solvent. All these substituted ferrocenes exhibit a reversible one‐electron oxidation reduction centred at each iron centre, and the effect of substituents on the half‐wave oxidation potential is discussed in terms of their electronic properties. Linear correlations have been observed between these potentials and the Hammett σ x constant for the substituents. Cyclic voltammetry has been carried out for ferrocene derivatives IIIa, V and IX. Copyright © 2003 John Wiley & Sons, Ltd.