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SYNTHESIS AND ELECTROCHEMISTRY OF DIMOLYBDENUM CROWN-ETHER IMIDO COMPLEXES

GREEN, MLH; HOGARTH, G; SAUNDERS, GC; (1991) SYNTHESIS AND ELECTROCHEMISTRY OF DIMOLYBDENUM CROWN-ETHER IMIDO COMPLEXES. J ORGANOMET CHEM , 421 (2-3) 233 - 239.

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Abstract

The complexes [(eta-MeC5H4)2Mo2O2(mu-O){mu-N(benzo-15-crown-5)}] (1) and [(eta-MeC5H4)Mo-(O) {mu-N(benzo-15-crown-5)}]2 (2) have been prepared by reaction of 4'-nitrobenzo-15-crown-5 with [(eta-MeC4H4)Mo(CO)3]2. Compounds 1 and 2 react with phenyl isocyanate to yield [(eta-MeC5H4) 2Mo2(NPh)2(mu-NPh)(mu-N(benzo-15-crown-5)}] (3) and [(eta-MeC5H4)Mo(NPh){mu-N(benzo-15-crown-5)}]2 (4) respectively. Acid hydrolysis of 3 yields [(eta-MeC5H4)2Mo2O2(mu-NPh){mu-N(benzo-15-crown-5)}] (5), whilst hydrolysis of 4 gives 2. The electrochemistry of compounds 1, 2 and 3 has been investigated by cyclic voltammetry in acetonitrile. Compound 1 undergoes an irreversible oxidation and an irreversible reduction. Compound 2 undergoes two irreversible oxidations, the first showing reversible behaviour at high scan rates, indicative of an EC mechanism. Compound 3 undergoes a reversible oxidation. Addition of excess sodium cations causes a significant anodic shift in the potential of this oxidation.

Type:Article
Title:SYNTHESIS AND ELECTROCHEMISTRY OF DIMOLYBDENUM CROWN-ETHER IMIDO COMPLEXES
Keywords:CATION BINDING, CRYSTAL, DERIVATIVES, MOLYBDENUM, LINK
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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