An ultrafast study of phenyl azide: The direct observation of phenylnitrenium ion

作者：Wang Jin; Kubicki Jacek; Platz Matthew S^*

来源：Organic Letters, 2007, 9(20): 3973-3976.

DOI：10.1021/o1701598m

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 phenyinitrenium ion.

• 出版日期2007-9-27