Synthesis and Coordination Chemistry of Multidentate Phosphaalkene Ligands

Abstract

Phosphaalkenes (R’P=CHR) contain low-lying π* orbitals that can accept electron density, leading to the stabilization of electron-rich metal centers. In addition, phosphaalkenes are capable of undergoing redox-active/non-innocent processes, and we will explore if these properties can be exploited by constructing multidentate phosphaalkene-based ligands that create well-defined metal complexes with a single open and reactive coordination site. In the following chapters, we will discuss the coordination chemistry of new PN bidentate ligands, the synthesis of a PNP pincer, and the generation of sterically shielded Rh(I) and Ir(I) complexes supported by a tetradentate tris(phosphaalkene)phosphine ligand.