THE IRS-DS STUDY OF INTERACTION OF THE SUPPORTED CATALYST BASED ON THE ORGANIC NICKEL CHELATE WITH CARBON-MONOXIDE AND ETHYLENE

The interaction of the supported catalyst based on the organic nickel chelate compound (I) with carbon monoxide and deuterated ethylene has been studied using IRS-DS. The surface nickel compound (SNC) interacts with carbon monoxide in the same manner as the initial nickel complex (I). The reaction of SNC or nickel complex (I) with CO yields nickel acyl complex (V) (a product of the CO insertion into the Ni-Ph bond), ester (Vm) and various nickel carbonyls (VI). According to the IRS dat a, the interaction between SNC and deuterated ethylene gives a polymer . The subsequent carbon monoxide introduction results in the same prod ucts as in the case of the CO reaction with SNC. The interaction betwe en ethylene and SNC pretreated with carbon monoxide does not lead to p olymerization. (C) 1998 Published by Elsevier Science B.V. All rights reserved.