Md. Johnson et Vc. Reinsborough, ORIENTATIONAL EFFECTS OF BETA-CYCLODEXTRINS ON ELECTRON-TRANSFER BETWEEN METAL-COMPLEXES IN SOLUTION, Journal of solution chemistry, 23(2), 1994, pp. 185-193
The kinetics of the electron transfer reaction between pentammine-(4,4
'bipyridine)ruthenium(II) and ohexyldiamine-N,N,N',N'-tetraacetatocoba
ltate(III) has been studied in unsubstituted and substituted beta-cycl
odextrin solutions. The increased ion-pairing and the decreased electr
on transfer rates that result when the ruthenium complex are encapsula
ted by cyclodextrins are interpreted in terms of hydrogen bonding betw
een cyclodextrin and the metal complexes markedly stabilizing the ion
pair.