Electron transfer in organouranium and transuranium systems

The preparation of a reduced uranocene derivative, potassium bis([8]annulene)uranate(III), and the 1,1'-dimethyl compound is described.1,1'-Di-t-butylneptunocene(IV) and -plutonocene(IV) and the potassium salts of the corresponding reduced compounds have been prepared.The 1 H NMR spectrum of the plutonocene shows temperature independent paramagnetism; the other compounds show normal temperature dependent paramagnetism.Mixtures of each of the bis[8]annuleneactinide(IV) compounds with the corresponding actinate(III) derivatives show rapid electron exchange on the NMR timescale.