The complex formation of a coplanar N,N'-ethylene-bipyridinium dication and dibenzo-24-crown-8 in methanol was detected by electrochemical techniques. It is demonstrated here that a coplanar ring arrangement is not required for an efficient charge-transfer interaction between bipyridinium and crown. The much stronger complexation of methyl viologen was investigated by both electrochemical and spectral techniques. The presence of a benzene ring in the crown molecule is a condition for complex formation. The described complex exerts catalytic activity for the reduction of oxygen.
COMPLEX-FORMATION OF METHYL VIOLOGEN AND DIQUAT WITH MACROCYCLIC ETHER DIBENZO-24-CROWN-8
FUOCO, ROGER
1988-01-01
Abstract
The complex formation of a coplanar N,N'-ethylene-bipyridinium dication and dibenzo-24-crown-8 in methanol was detected by electrochemical techniques. It is demonstrated here that a coplanar ring arrangement is not required for an efficient charge-transfer interaction between bipyridinium and crown. The much stronger complexation of methyl viologen was investigated by both electrochemical and spectral techniques. The presence of a benzene ring in the crown molecule is a condition for complex formation. The described complex exerts catalytic activity for the reduction of oxygen.File in questo prodotto:
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