An ultrafast study of phenyl azide: the direct observation of phenylnitrenium ion.
Ultrafast photolysis (lambda(ex) = 308 nm) of phenyl azide in 100% formic acid produces a broadly absorbing transient within the instrument time resolution (300 fs), which is assigned to an excited state of the azide. The azide excited state fragments within 300 fs to form singlet phenylnitrene. The decay of the nitrene (tau = 12.0 ps) produces a new species with absorption centered at 500 nm, which is assigned to phenylnitrenium ion. The lifetime of phenylnitrenium ion is 110 ps in 100% formic acid. This is the first spectroscopic observation of phenylnitrenium ion.
Wang
Jin
J
Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, USA.
Kubicki
Jacek
J
Platz
Matthew S
MS
D001386:Azides / Q000737:chemistry*; D001555:Benzene Derivatives / Q000737:chemistry*; D007094:Imides / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D015394:Molecular Structure; D013053:Spectrophotometry; D013997:Time Factors
D001386:Azides; D001555:Benzene Derivatives; D007094:Imides; D007477:Ions; C523745:phenylnitrenium; C014747:phenylazide