Date of Award
1-1-2013
Document Type
Dissertation
Degree Name
Ph.D. in Chemistry
Department
Chemistry and Biochemistry
First Advisor
Thedford K. Hollis
Second Advisor
Daniel Mattern
Third Advisor
Mitchell A. Avery
Relational Format
dissertation/thesis
Abstract
The previously reported amine elimination methodology for the metalation of CCC-NHC pincer ligand precursors has been extended to other early-transition metals and ligands. Specifically, synthetic results for the preparation of imidazole based CCC-NHC pincer Ti (IV), CCC-NHC pincer Ta (V) will be discussed. In addition, the synthesis of a new triazole based CCC-NHC pincer ligand precursor and its metalation with Ta (V) will be presented. Coordination sphere manipulation of the new pincer complexes using TMSCl for the Ti complex and lithium t-butylamide for the Ta complexes is also discussed. The reaction of the initial Ta CCC-NHC complex with lithium t-butylamide is of particular interest as it is the first X-ray crystallographically determined molecular structure of an early-transtion metal anionic N-heterocyclic carbine complex. Catalytic results in hydroamination/cyclization with the Ti complexes and oxidative amination using the Ta complexes will also be reported.
Recommended Citation
Helgert, Theodore Rudy, "Early Transition Metal CCC-NHC Pincer Complexes: Synthesis, Characterization, and Catalysis" (2013). Electronic Theses and Dissertations. 1364.
https://egrove.olemiss.edu/etd/1364