THE RELATIONSHIP BETWEEN THE BRIDGING ALKYL GROUP AND ELECTROCHEMICAL-BEHAVIOR OF SOME BIFERROCENYL ALKANES

The cyclic voltammetric behavior of some alkyl-bridged biferrocene com pounds are reported. It was found that the stable conformation is the decisive factor influencing their electrochemical properties. The larg er the angle between the two ferrocenyl groups and the bridge carbon d eviates from 109 degrees 28', the greater the Delta E-p value becomes. Besides, the electrochemical behavior of some 6-acyl, 6,6' -diacyl al kyl-bridged biferrocene derivatives are investigated and the factors a ffecting their electrochemical behavior are also discussed. Acyl group exerts an electron-withdrawing effect on the ferrocenyl moieties, whi ch makes them more difficult to be oxidized than their parent compound .