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Free keywords:
EPR spectroscopy; phosphanyl complexes; phosphaquinomethane; phosphinidenoid complexes; tritylium salts
Abstract:
C-P or C=P? One‐electron oxidation of Li/Cl phosphinidenoid complexes led to the discovery of transient P‐chlorophosphanyl complexes 1. Subsequent cross‐coupling and rearrangement or elimination reactions yielded 2 and 3; the latter is the first structurally characterized phosphaquinomethane complex. ESR spectroscopy and DFT calculations support the existence of short‐lived P‐centered radicals.