Selectivity in the laser-induced photochemistry of iodine + acetylene in the gas phase
作者:M. Cecilia. Yappert、Edward S. Yeung
DOI:10.1021/ja00284a015
日期:1986.11
The reaction between I/sub 2/ and acetylene has been carefully studied to establish its potential use for the separation of radioactive isotopes of iodine. The two possible photoproducts, cis- and trans-1,2-diiodoethylene, were prepared and then characterized by GC, GC-MS, and FTIR in both condensed and gas phases. For the first time the IR spectra of both cis and trans isomers in the gas phase are
I/sub 2/ 与乙炔之间的反应已经过仔细研究,以确定其在分离碘的放射性同位素方面的潜在用途。制备了两种可能的光产物,顺式和反式 1,2-二碘乙烯,然后在冷凝和气相中通过 GC、GC-MS 和 FTIR 进行表征。首次报道了气相中顺式和反式异构体的红外光谱。在离解能以下,当 I/sub 2/ 的邻位或对位修饰被激发时,只有反式异构体作为产物被发现。对 /sup 127/I/sub 2/、/sup 129/I/sub 2/ 和 /sup 127/I、/sup 129/I 的同位素混合物进行的研究表明,反应是通过向乙炔中加入碘原子而进行的. 原子的产生导致同位素加扰。最后,