ELECTROCHEMICAL STUDY OF SOME BROMO-SUBSTITUTED [2.2]PARACYCLOPHANESстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The potentials of electrochemical oxidation (E(1/2)(Ox)) and reduction (E(1/2)(Red)) of monobromo- and isomeric di- and tribromo[2.2]paracyclophanes as well as E(1/2)(Ox) of mono-, di-, and tribromobenzenes were measured in acetonitrile. The similarity between the properties of pseudo-para-disubstituted cyclophanes and meta-disubstituted benzenes, on the one hand, and pseudo-meta-disubstituted cyclophanes and para-disubstituted benzenes, on the other hand, was confirmed by the existence of a linear relationship between E(1/2)(Red) of bromo-substituted [2.2]paracyclophanes and E(1/2)(Red) of the corresponding bromo-substituted benzenes. The results were explained in terms of the qualitative theory of molecular orbitals, taking into account a ''through space'' interaction between the pi-systems of the benzene rings.