Double-helical ruthenium complexes of 2,2′:6′,2″, 2‴:6‴,2â�—-quinquepyridine (qpy) for multi-electron oxidation reactions
Abstract
Double-helical ruthenium complexes of 2,′:6′,2″:6″,2‴:6‴,2â�—-quinquepyridine (qpy) are prepared from RuCl3·xH2O and qpy and the crystal structure of [Ru2(qpy)2(C2O4)][CF3SO3]2·6H2O determined; chemical and electrochemical oxidations of [Ru2(qpy)2(H2O)2]4+ in aqueous solution generate high-valent oxoruthenium complexes of qpy, which are powerful oxidants.