Electrochemistry of Ferrocene in 1-Methyl-3-Ethylimidazolium Chloride/Aluminum Chloride Room Temperature Melts.
Abstract
Ferrocene has been studied in 1-Me-3-EtImCl-A1C13 melts over a range of Lewis acidities by varying the melt composition from 0, 4 to 0,6 (mole fraction of A1C13). The redox potential for ferrocene is not influenced by chloride concentration in the melts and is 0.40 + or - 0.005 V (vs A1 in 0.6 melt). Ferrocene is stable in basic and neutral melts but reacts chemically in acidic melts. Kinetic studies show the chemical reaction to be second order with a rate constant of about .00009 1/M sec, at 27C. The reversible redox processes were studied using cyclic voltammetric, steady-state potentiostatic and rotating disk electrode voltammetry at glassy carbon electrodes. Kinetic parameters indicate the electrode processes to be kinetically controlled and the rate limiting step is a chemical process following the electron transfer for both oxidation and reduction.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1986
- Accession Number
- ADA171448
Entities
People
- B. J. Piersma
- J. S. Wilkes
Organizations
- Air Force Research Laboratory