The Photochemistry of 4,5-Carbomethoxy-1,2,3-thiadiazole: Direct Observation of Thiirene Formation and Its Decay in Solution
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- 作者：Gotard Burdzinski ; Hoi Ling Luk ; Carolyn S. Reid ; Yunlong Zhang ; Christopher M. Hadad ; Matthew S. Platz
- 刊名：The Journal of Physical Chemistry A
- 出版年：2013
- 出版时间：June 6, 2013
- 年：2013
- 卷：117
- 期：22
- 页码：4551-4555
- 全文大小：280K
- 年卷期：v.117,no.22(June 6, 2013)
- ISSN：1520-5215
文摘
The photochemistry of 4,5-carbomethoxy-1,2,3-thiadiazole in solution was studied at room temperature with use of UV鈥搗is and IR transient absorption spectroscopies (位ex = 266 nm). Ultrafast time-resolved techniques demonstrate that there is a very fast rise (<0.4 ps) of bis(carbomethoxy)thiirene in acetonitrile, and that it is the only intermediate formed. The lifetime of the thiirene is limited by dimerization to eventually form tetra(carbomethoxy)thiophene.