Imidazolin-2-iminates [ImRN]- are a new class of monoanionic imine ligands, built upon an N-heterocyclic carbene core, which exhibit excellent σ and π-donor abilities. Our laboratory has been exploring the electronic effects of imine substituents on guanidinate ligands, including those functionalized by ImRN groups. Addition of [ImRN]- to bis(2,6-diisopropylphenyl)carbodiimide cleanly affords [(ImRN)C(dipp)2]- (1) which can be formally considered as a “guanidine-guanidinate.” We anticipate the nitrogen-rich framework of 1 will display exceptional electron donating abilities when coordinated to a metal. Our studies to understand its structural and electronic properties, including its coordination chemistry with 3d metals, will be presented.

Synthesis and characterization of a new guanidinate-guanidinate ligand featuring an imidazolin-2-iminate backbone

249th National Meeting (2015)

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