Proazaphosphatrane palladium complexes have displayed catalytic activity in organometallic reactions such as amination of both aryl and vinyl halides. The success of these catalytic reactions stem from the highly basic proazaphosphatrane molecule. However, no reported values of the electron donor strength of proazaphosphatranes have been measured. In this presentation, the Tolman Electronic Parameter (TEP) and cone angle was measured for a series of functionalized proazaphosphatranes. The measured TEPs of the proazaphosphatranes display some of the highest electron donor strength of any previously measured phosphine ligands. These reported TEP values of proazaphosphatranes were used to evaluate the electron donor strength of our ligand, tri(pyridylmethyl) azaphosphatrane, TPAP. The TPAP ligand has the potential to bind to different metal ions in a multidentate fashion, conferring higher stability than its monodentate analouge in organometallic complexes.

Electronic and steric properties of a modified proazaphosphatrane: Tri(pyridylmethyl)azaphosphatrane

251st National Meeting (2016)

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