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Displacement reactions and fluorescence studies of boroxine amine complexes

WCU Author/Contributor (non-WCU co-authors, if there are any, appear on document)
Terryol Wilson (Creator)
Institution
Western Carolina University (WCU )
Web Site: http://www.wcu.edu/404.asp
Advisor
William Kwochka

Abstract: The Boron atom has seen an increase in usefulness over the last half century due in part to the unique properties of boron that allow for dative binding. Aspects of the boron-nitrogen bond were examined through both displacement reactions, which were monitored by NMR, and photoluminescence studies done with a Fluorometer. Through the NMR study it was discovered that the dative bond is affected by both the electronic configuration of the boroxine and the pKa of the Lewis base being used for complexation. It appears that the displacement of pyridine from the original complex is dictated by the pKa of the displacing base; a stronger base leading to more complete displacement of pyridine from the complex. Using fluorimetry, several Lewis base-boroxine complexes were studied in order to observe possible differences in the ?max emission between the uncomplexed boroxine and the coupled base-boroxine pair, a behavior believed to be dependent on the shifting of electron density from the Lewis base towards the boroxine.

Additional Information

Publication
Thesis
Language: English
Date: 2011
Keywords
Boron Nitrogen Dative bonding, Boroxine Fluorescence
Subjects
Boron compounds -- Analysis