Date of Award

Spring 2022

Degree Type

Thesis

Department

Chemistry and Biochemistry

Director of Thesis

Aaron Vannucci

Second Reader

Pooja Ayare

Abstract

Two molecular nickel-based catalysts, (2,2’bipyridine-4,4’-carboxylic acid)nickel(II) chloride and (2,2'-bipyridine-4,4'-diamidopropylsilatrane)nickel(II) chloride, were synthesized and subsequently attached to a solid support in the form of amorphous silicon dioxide to create two hybrid molecular/heterogeneous catalysts. Characterization using ICP-MS and ATR-FTIR confirms that both catalysts are bonded to the SiO2 support. The catalysts were both able to catalyze a Suzuki-Miyarua cross-coupling which their molecular counterparts were unable to; the carboxylate catalyst was able to achieve yields of 10% and the silatrane catalyst achieved yields of up to 50%. Post-reaction analysis indicated that while some catalyst desorption occurred in both complexes, active catalytic species remained adhered to the surface post-reaction, with the silatrane catalyst showing more resistance to leaching. These hybrid catalysts represent another advancement in the field of surface stabilized metal oxide catalysts using an earth abundant transition metal.

First Page

1

Last Page

19

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