Effects of Inclusion of (Ferrocenylmethyl)trimethylammonium Complexes in Para-Sulfonated Calixarenes on the Kinetics of Their Electron Transfer Reactions

The guest-host inclusion of transition metal complexes in macrocyclic receptors can have a pronounced effect on the kinetics of their electron transfer1-12 reactions in solution. In addition to rendering an included complex less reactive or nonreactive by means of inhibiting their access to the other reactant(s) in the reaction process, the inclusion can also change other properties, such as their reduction potential,13 which will in turn affect the kinetics of their electron transfer reactions. The effects of guest-host interactions on the kinetics of electron-exchange and electron transfer reactions of transition metal complexes have been studied with cyclic host molecules such as the crown ethers,1-4 cyclodextrins,6-12 and calixarenes.5 The kinetic behaviour of the included transit ion metal Inorganic Reaction Mechanisims, Vol. 6, pp. 161-168 © 2006 Old City Publishing, Inc. Reprints available directly from the publisher Published by license under the OCP Science imprint, Photocopying permitted by license only a member of the Old City Publishing Group.