Complexes of early transistion metals containing carbon-metal bonds have shown to be powerful catalysts for important industrial reactions, most notably the polymerization of olefins. However, organometallic complexes of early transition metals containing acetylacetonate type ligands have been historically unknown. In our group, we have demonstrated the ability of an exceptionally bulky acetylacetonate ligand to support new organometallic complexes. Using this ligand, novel coordination compounds of early transistion metals such as Zirconium or Niobium have been synthesized. The steric bulk of the ligand helps to prevent nucleophilic attack on the ligand by organometallic bonds, as well as enabling new coordination geometries of highly Lewis-acid coordination compounds. This presentation gives an overview of the advantages of the ligand system, the synthetic achievements to date, and the implications for new catalysis using acetylacetonate ligands.

Organometallic complexes of early transition metals supported by bulky acetylacetonate ligands

2019 Fall National Meeting

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