ELECTRON-TRANSFER IN ORGANOURANIUM AND TRANSURANIUM SYSTEMS

The preparation of a reduced uranocene derivative, potassium bis([8]annulenediyl)uranate(III), K+[(C8Hg)2U]−, and the 1,1′-dimethyl compound is described. 1,1′-Di-tert-butylneptunocene(IV) and -plutonocene(IV) and the potassium salts of the corresponding reduced compounds have been prepared. The 1H NMR spectrum of the plutonocene shows temperature-independent paramagnetism; the other compounds show normal temperature-dependent paramagnetism. Mixtures of each of the bis([8]-annulenediyl)actinide(IV) compounds with the corresponding actinate(III) derivatives show rapid electron exchange on the NMR time scale. © 1990, American Chemical Society. All rights reserved.