Transient absorption spectral evidence for phenyl nitrene as the chain propagator in the photo-initiated autocatalytic chain decomposition of phenyl azide and phenyl isocyanate

✍ Scribed by Natalie B. Feilchenfeld; Walter H. Waddell

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 411 KB
• Volume: 98
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(83)87126-7

✦ Synopsis

Transxnt

absorptton spectra nere recorded 1.5 ns to 6 ps foIlo\sing a 266 nm laser pulse for phenyl aide and for phenyl wxyanatc in aerated axtonttrilc and 3methylpentanc soluttons.

Trnnsicnt spectra which are independent of concentra-Uon and of dsl;lv time. xc essentialI) tdenticti for pltenyl azide and for phenyl isocyanate, except at h&her energies where piten) 1 .tzidc .horbs, ad are assigned as th.tt of triplet phcnyl nitrene. Stnce there is no spectral evidence for a second spe-CWC_ pilcn~~~ nitrate IS !houpht the chn%n propzgxtoi in the autocntrtlytic ch;un decomposition that occurs for phenyl midc .uuld for phcnyl Isocynnatc.