P-centered Dibenzophosphyl Radical: A Matrix Isolation IR, UV/Vis and ESR spectroscopic study
RESOLV Member, Dr. Andre K. Eckhardt and co-workers present a study describing the generation and matrix isolation of a dibenzophosphole-based P-centered radical.
In the study, the group describes the generation and matrix isolation of a dibenzophosphole-based P-centered radical via photolysis or pyrolysis from an iodo precursor in argon and para-hydrogen (p-H2). The radical was experimentally characterized by Infrared, UV/Vis and Electron Spin Resonance (ESR) spectroscopy. Organophosphorous compounds are one of the fundamental building blocks in fields like organic synthesis, pharmaceuticals and optoelectronic matrials. They report that the P-benzophosphyl radical is a π-radical with a 2B1 electronic ground state, where the unpaired electron resides in a p-orbital perpendicular to the molecular plane and with some degree of electron density delocalization over the aromatic rings through detailed analysis of the spectroscopic data and quantum chemical calculations.
