Unusual Quartet-Doublet Phosphorescence from the Phosphaethynyl Radical, CP
Résumé
We report the first detection of phosphorescence from the phosphaethynyl radical. This rare instance of quartet-doublet emission, studied here in solid argon, is presumably promoted by efficient intersystem crossing from the originally photoexcited doublet (B 2 Σ + ) to the adjacent second quartet state, 1 4 Δ. Vibronic progressions were traced for the a 4 Σ + -X 2 Σ + and a 4 Σ + -A 2 П i systems from their origins up to (v’=0)→(v"=5) and (v’=0)→(v"=2) bands, respectively. The measured phosphorescence lifetime is 108 ± 3 ms.
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Ganesan et al. - 2022 - Unusual Quartet-Doublet Phosphorescence from the P.pdf (1.48 Mo)
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