Direct, time resolved measurements of absolute rate constants for reaction of SiH2(1A1) with C2H2 and C2D2 have revealed a pressure (and temperature) dependent isotope effect characteristic of an association process yielding an intermediate (silirene) which undergoes, amongst other reactions, a degenerate isotopic scrambling process.
对 SiH2(1A1)与
C2H2 和 C2D2 反应的绝对速率常数进行的直接时间分辨测量显示,在产生中间体(
硅烯)的关联过程中,存在着一种与压力(和温度)相关的同位素效应,该中间体除其他反应外,还经历了一个退化的同位素扰乱过程。