ELECTROCHEMICAL AND CHEMICAL-REDUCTION OF NIOBOCENE DICHLORIDES IN THE PRESENCE OF CARBON-DIOXIDE

ELKRAMI, S and MOURAD, Y and MUGNIER, Y and ANTINOLO, A and DELHIERRO, I and GARCIAYUSTE, S and OTERO, A and FAJARDO, M and BRUNNER, H and GEHART, G and WACHTER, J and AMAUDRUT, J (1995) ELECTROCHEMICAL AND CHEMICAL-REDUCTION OF NIOBOCENE DICHLORIDES IN THE PRESENCE OF CARBON-DIOXIDE. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 498 (2). pp. 165-170. ISSN 0022-328X,

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Abstract

The chemical and electrochemical reduction of the niobocene dichlorides [Nb(eta(5)-C(5)H(4)SiMe(3))(2)Cl-2] 1, [Nb(eta(5)-C(5)Me(5))(2)Cl-2] 2 and [Nb(eta(5)-C(5)Me(4)Et)(2)Cl-2] 3, in the presence of carbon dioxide has been investigated. Formation of compounds of the type [Cp(2)Nb(CO2)] and [Cp(2)((*))NbCl(CO2)](1) has been established by means of IR, ESR and/or NMR spectroscopy. They contain a labile eta(2)-CO2. The order of stability increases with the degree of substitution the Cp. Less stable intermediates in the reduction of the system [Cp(2)NbCl(2)]/CO2 are discussed on the basis of cyclovoltammetric and coulometric data.

Item Type: Article
Uncontrolled Keywords: X-RAY STRUCTURE; ELECTROCATALYTIC REDUCTION; ORGANOMETALLIC COMPOUNDS; METALLOCENE DERIVATIVES; COMPLEXES; REACTIVITY; CO2; ACTIVATION; ELECTROGENERATION; ACETONITRILE; NIOBIUM; ELECTROCHEMISTRY; CARBON DIOXIDE COMPLEXES; REDUCTION
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:37
URI: https://pred.uni-regensburg.de/id/eprint/52375

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