Navy blue crystals of a two-coordinate homoleptic palladium complex with two phosphinyl radical ligands was synthesized by a simple ligand-exchange reaction. Significant π interactions between orbitals of Pd and the SOMO of phosphinyl radicals are responsible for the diamagnetic character, the intense blue color, and short P-Pd distances. Hydrogenation of the complex gave the corresponding bis(dialkylhydrophosphine)palladium complex.
- phosphinyl ligands
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