Format of Presentation

Poster to be presented the Friday of the conference

Abstract

The goal of this experiment is to synthesize, characterize, and utilize the catalyst chlorotris(triphenylphosphine)rhodium(I), also known as Wilkinson’s Catalyst, on a small scale using Nuclear Magnetic Resonance (NMR) spectroscopy. The synthesis of the catalyst and hydrogenation of cyclohexene is carried out entirely in an NMR tube; this technique of small-scale synthesis and characterization is employed often in graduate studies and synthetic labs but is not often utilized at the undergraduate level. As such, small quantities are used throughout. This reaction is monitored throughout using NMR spectroscopy.

We have successfully developed a new microscale experiment that can be used in 3rd and 4th year inorganic laboratory courses: the only glassware required is a J. Young NMR tube. Green chemistry is incorporated because the students will be using smaller amounts of heavy metals, organic compounds, and solvent. Furthermore, less waste is produced. Students gain experience with the NMR, which is an instrument used extensively in research laboratories.

Department

Chemistry

Faculty Advisor

Dipesh Prema

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Hydrogenation of Cyclohexene using Wilkinson’s Catalyst: Development of a Chemistry Laboratory for 3rd and 4th Year Students

The goal of this experiment is to synthesize, characterize, and utilize the catalyst chlorotris(triphenylphosphine)rhodium(I), also known as Wilkinson’s Catalyst, on a small scale using Nuclear Magnetic Resonance (NMR) spectroscopy. The synthesis of the catalyst and hydrogenation of cyclohexene is carried out entirely in an NMR tube; this technique of small-scale synthesis and characterization is employed often in graduate studies and synthetic labs but is not often utilized at the undergraduate level. As such, small quantities are used throughout. This reaction is monitored throughout using NMR spectroscopy.

We have successfully developed a new microscale experiment that can be used in 3rd and 4th year inorganic laboratory courses: the only glassware required is a J. Young NMR tube. Green chemistry is incorporated because the students will be using smaller amounts of heavy metals, organic compounds, and solvent. Furthermore, less waste is produced. Students gain experience with the NMR, which is an instrument used extensively in research laboratories.

 

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