title: Direct observation of methoxycarbonylnitrene.
abstract: The simplest alkoxycarbonylnitrene, CH3OC(O)N, has been generated through laser (266 and 193 nm) photolysis of CH3OC(O)N3and CH3OC(O)NCO and subsequently characterized by IR (15N, D-labelling) and EPR (|D/hc| = 1.66 cm-1and |E/hc| = 0.020 cm-1) spectroscopy in cryogenic matrices. Two conformers of the nitrene, with the CH3group being in syn or anti configuration to the C[double bond, length as m-dash]O bond, have been unambiguously identified. Further UV light irradiation (365 nm) of the nitrene results in isomerization to CH3ONCO, completing the frequently explored mechanism for the Curtius-rearrangement of CH3OC(O)N3.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu 215123, China. xqzeng@suda.edu.cn.
authors.forename: Hongmin
authors.initials: H
authors.lastname: Li
authors.forename: Zhuang
authors.initials: Z
authors.lastname: Wu
authors.forename: Dingqing
authors.initials: D
authors.lastname: Li
authors.forename: Huabin
authors.initials: H
authors.lastname: Wan
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.forename: Manabu
authors.initials: M
authors.lastname: Abe
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Zeng