Mapping the Reactivity Surface of Metal-Olefin Reactions

Presentation Type

Poster/Portfolio

Presenter Major(s)

Chemistry

Mentor Information

Stephen Matchett, matchets@gvsu.edu

Department

Chemistry

Location

Kirkhof Center KC 70

Start Date

13-4-2011 4:00 PM

End Date

13-4-2011 5:00 PM

Keywords

Physical Science

Abstract

Metal-olefin complexes are intermediates in a wide variety of industrial reactions. Interestingly, the metal-olefin bond is not always symmetric. The purpose of this study was to understand how the asymmetry of the metal-olefin bond affects the rate of nucleophilic attack by measuring the rate of attack across a series of 12 metal-olefin complexes, previously made in our lab. Unfortunately, the majority of our time was spent in methods development. Solutions of metal-olefin complexes are air-sensitive, complicating the accurate measurement of their concentration. In addition, several of our solvent systems were found to react directly with our metal-olefin complex, making them unusable. In the end, we settled on CH3NO2 and C2H4Cl2 as the most compatible. Using these we worked out the method for running the kinetics experiments, but the preliminary data shows there are still some stability problems in solution.

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Apr 13th, 4:00 PM Apr 13th, 5:00 PM

Mapping the Reactivity Surface of Metal-Olefin Reactions

Kirkhof Center KC 70

Metal-olefin complexes are intermediates in a wide variety of industrial reactions. Interestingly, the metal-olefin bond is not always symmetric. The purpose of this study was to understand how the asymmetry of the metal-olefin bond affects the rate of nucleophilic attack by measuring the rate of attack across a series of 12 metal-olefin complexes, previously made in our lab. Unfortunately, the majority of our time was spent in methods development. Solutions of metal-olefin complexes are air-sensitive, complicating the accurate measurement of their concentration. In addition, several of our solvent systems were found to react directly with our metal-olefin complex, making them unusable. In the end, we settled on CH3NO2 and C2H4Cl2 as the most compatible. Using these we worked out the method for running the kinetics experiments, but the preliminary data shows there are still some stability problems in solution.