4.8 Article

Diazophosphane HPN2

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 144, Issue 48, Pages 21853-21857

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c10003

Keywords

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Funding

  1. National Natural Science Foundation of China
  2. China Postdoctoral Science Foundation
  3. [22025301]
  4. [22203017]
  5. [2022M710735]

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Diazophosphane HPN2, a heavy analogue of hydrazoic acid (HN3), was synthesized at low temperature and its structural and chemical properties were characterized. The chemical bond in HPN2 breaks under certain light conditions, leading to the formation of a phosphinyl radical.
Diazophosphane HPN2, a heavy analogue of hydrazoic acid (HN3), has been synthesized at low temperature (10 K) through photolytic reactions of molecular nitrogen (N2) with phosphine (PH3) and phosphaketene (HPCO) under irradiations at 193 and 365 nm, respectively. The characterization of HPN2 and its isotopologues DPN2 and HP15N2 by matrix-isolation IR and UV-vis spectroscopy is supported by quantum chemical calculations at the CCSD(T)-F12a/cc-pVTZ-F12 level of theory. Upon irradiation at 266 nm, the P-N bond in HPN2 breaks, whereas its photolysis at 193 nm generates the elusive phosphinyl radical center dot PN2.

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