12156-05-7Relevant articles and documents
Metallocene electrochemistry. 4. Ferrocenylalkyl-substituted quaternary ammonium cations in aqueous, organic, and molten salt phases
Gale,Motyl,Job
, p. 130 - 133 (2008/10/08)
Reduction-oxidation, diffusion, and solubility properties of several ferrocenylalkyl quaternary ammonium derivatives have been determined in aqueous, acetonitrile, and room-temperature AlCl3-1-butylpyridinium chloride melt electrolytes. Electrochemical evidence supports the premise that nucleophilic attack of ferrocenium ion charge-transfer products occurs in basic melts, the extent of which relates to anticipated electronic substituent effects. In acidic melts, the quaternary salt is shown to decompose and to undergo an intramolecular electron transfer from the carbonium ion to the metal center. Such behavior is consistent with earlier ideas concerning the reactivities and reaction pathways of these compounds. The yellow 1-COOH derivative of ferrocene dissolves in slightly acidic melts to produce a red color, and a reversible, one-electron wave is found at +0.726 V vs. Al (2:1) reference.