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Peer-reviewedCC BY 4.0Physical Chemistry Chemical Physics

Photolysis of methylphosphine in an argon matrix: spectral characterization of methylphosphinidene (CH3P) and phosphaethene (CH2PH)

  • Elavenil Ganesan
  • Arun-Libertsen Lawzer
  • Thomas Custer
  • Jean-Claude Guillemin
  • Robert Kołos
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Abstract

Vacuum-ultraviolet (VUV) photolysis of methylphosphine (CH3PH2) isolated in a cryogenic argon matrix yields phosphaethene (CH2PH), methylphosphinidene (CH3P), phosphaethyne (HCP), methane, and phosphorus monohydride (PH) as the primary photoproducts. Subsequent irradiation at 254 nm induces the decomposition of CH2PH, accompanied by the formation of CH3P. In contrast, irradiation at 311 nm promotes the decomposition of CH3P and the PH and ctdot;CH4 complex, leading to the regeneration of CH2PH and CH3PH2. These wavelength-selective photochemical transformations made it possible to carry out the first IR and UV spectroscopic characterization of CH3P and to extend the assignment of infrared bands for CH2PH.

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Cite

BibTeXRIS
BibTeX
@article{ganesan2026photolysis,
  title = {{Photolysis of methylphosphine in an argon matrix: spectral characterization of methylphosphinidene (CH3P) and phosphaethene (CH2PH)}},
  author = {Elavenil Ganesan and Arun-Libertsen Lawzer and Thomas Custer and Jean-Claude Guillemin and Robert Kołos},
  journal = {Physical Chemistry Chemical Physics},
  year = {2026},
  month = aug,
  doi = {10.1039/d6cp02336c},
  url = {https://hal.science/hal-05789574v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Photolysis of methylphosphine in an argon matrix: spectral characterization of methylphosphinidene (CH3P) and phosphaethene (CH2PH)
AU  - Elavenil Ganesan
AU  - Arun-Libertsen Lawzer
AU  - Thomas Custer
AU  - Jean-Claude Guillemin
AU  - Robert Kołos
PY  - 2026
DA  - 2026/08/26
JO  - Physical Chemistry Chemical Physics
DO  - 10.1039/d6cp02336c
UR  - https://hal.science/hal-05789574v1
AB  - Vacuum-ultraviolet (VUV) photolysis of methylphosphine (CH3PH2) isolated in a cryogenic argon matrix yields phosphaethene (CH2PH), methylphosphinidene (CH3P), phosphaethyne (HCP), methane, and phosphorus monohydride (PH) as the primary photoproducts. Subsequent irradiation at 254 nm induces the decomposition of CH2PH, accompanied by the formation of CH3P. In contrast, irradiation at 311 nm promotes the decomposition of CH3P and the PH and ctdot;CH4 complex, leading to the regeneration of CH2PH and CH3PH2. These wavelength-selective photochemical transformations made it possible to carry out the first IR and UV spectroscopic characterization of CH3P and to extend the assignment of infrared bands for CH2PH.
SN  - 1463-9076
SN  - 1463-9084
ER  -