Tuesday, 24 May 2005

This presentation is part of: NanoScience and Technology Posters

Platinum and Rhodium Nanoclusters as Catalyst in Hydrosilylation of Alkenes and Alkynes

Bhanu P.S. Chauhan1, Moni Chauhan2, Gilchris O. Burton2, and Umar Latif3. (1) Nanomaterials Laboratory of Center for Engineered Polymeric Materials, Department of Chemistry, City University of New York, Staten Island, NY, (2) Queensborough Community College, Bayside, NY, (3) bNanomaterials Laboratory of Center for Engineered Polymeric Materials, Department of Chemistry and Graduate Center, City Univer, Staten Island, NY

Platinum (Pt) and Rhodium (Rh) metal nanoclusters can be envisioned as efficient and recyclable catalyst in the hydrosilylation reactions of alkenes and alkynes.1 Pt and Rh are electron rich transition metals that are part of the largest group of catalyst used in hydrosilylation and allow synthetic manipulation over the selectivity of product formation. Hydrosilylation is a considerable reaction type in the production of organosilicon compounds and polymer chemistry. We are interested in designing new hybrid materials by the grafting of various functionalities on silicon-based polymers via hydrosilylation (Scheme 1).2 Scheme 1 We envision that materials with unique properties can be devised in this fashion. Numerous reactions were carried out under various conditions especially that of temperature and reaction time to determine the optimum conditions of maximum yield in product and selectivity. All products were analyzed and confirmed utilizing UV-vis Spectroscopy, Infra-red (IR) Spectroscopy, Transmission Electron Microscope (TEM) and Nuclear Magnetic Resonance (NMR) Spectroscopy which clearly describes Si-C bond formation and alpha (&alpha) or beta (&beta) selectivity.

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