吸电子诱导效应次序(大到小)-NO2.-CN.-COOH.-F.-Cl.-Br.-I.-炔基.-OCH3.-C6H5.-CH=CH2.-H斥电子诱导效应次序(大到小)-C(CH3)3.-CH(CH3)2.-CH2CH3.-CH3.-H
-NO2吸电子,-NC给电子, -F给电子, -CH3给电子,-N2O给电子,-NH2吸电子, -OCH3给电子