Organometallics
Organometallics
5 years ago

Investigations into the Photophysical and Electronic Properties of Pnictoles and Their Pnictenium Counterparts

Investigations into the Photophysical and Electronic Properties of Pnictoles and Their Pnictenium Counterparts
Samuel J. Adams, Alex C. Rigby, Emma Richards, Darren M. C. Ould, James A. Platts, Simon J. A. Pope, Rebecca L. Melen, Lewis C. Wilkins
The reaction of phosphole/arsole starting materials with a series of halide abstraction reagents afforded their respective phosphenium/arsenium complexes. UV–vis absorption and luminescence studies on these cations showed interesting emission profiles, which were found to be dependent upon counterion choice. The addition of a reductant to the phosphole reagent garnered a dimeric species with a central P–P bond, which when heated was found to undergo homolytic bond cleavage to produce an 11π radical complex. Electron paramagnetic resonance (EPR), supported by density functional theory (DFT) calculations, was used to characterize this radical species.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00564

DOI: 10.1021/acs.organomet.7b00564

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