The copolymerization of ethylene with vinyl co-monomers is an ongoing, and generally, unsolved problem in organometallic chemistry. Prior work has established the importance of the steric bulk (size and shape) of the catalyst in both catalytic performance and resulting polymer microstructure. Bithiazole ligands are neutral, four-electron, N-donor bidentate chelating ligands. Importantly, these bithiazole ligands may be prepared in one step from readily available a-bromoketones and dithiooxamide. Despite the striking resemblance of bithiazole to the widely studied a�diimine system, there are no reports of bithiazole-based catalysts currently in the literature.

Synthesis and characterization of sterically encumbered bithiazole ligands

245th National Meeting (2013)

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