The coordination chemistry of ruthenium dinitrogen complexes have seen continued interest since the discovery of the first N2 complex, [Ru(NH3)5(N2)]2+. Herein we present the synthesis and characterization of a family derived from (PNP)Ru(H)(N2) (PNP = bis[2-(di-tert-butylphosphino)ethyl]amide), wherein the N2 ligand lies trans to the central amide donor of the pincer. A series of hydrido dinitrogen complexes varying the backbone structure from amide to amine, imine, enamide and dienamide were synthesized, and the N2 ligand was characterized using NMR and IR spectroscopy and XRD analysis. The effect of varying trans π-donation and the role of coordinating counter ions in cationic Ru N2 complexes will be discussed.

Effect of PNP pincer backbone structure on dinitrogen activation in ruthenium hydride complexes

254th National Meeting (2017)

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