Successive reactions of iron carbonyl cations with H2O: influence of a buffer gas on ligand substitution rate
作者:S. Le Caër、M. Heninger、H. Mestdagh
DOI:10.1016/s0009-2614(01)01498-1
日期:2002.2
The kinetics of the successive ligand substitutions in the Fe(CO)n+/H2O systems (n=1–5) are studied using a triple cell Fourier Transform Ion Cyclotron Resonance spectrometer. For n=3 and 4, substitution of the last ligand is not observed and the terminal substitution products are Fe(CO)(H2O)n−1+; a second channel in which two CO are simultaneously replaced by a H2O molecule is also observed. The internal
使用三单元傅里叶变换离子回旋共振光谱仪研究了Fe(CO)n + / H 2 O系统(n = 1–5)中连续配体取代的动力学。对于n= 3和4,未观察到最后一个配体的取代,并且末端取代产物为Fe(CO)(H 2 O)n -1 +。还观察到第二个通道,其中两个CO同时被H 2 O分子取代。Fe(CO)n +离子的内能对反应性没有显着影响。在Fe(CO)2 + / H 2中在O系统中,第二次取代反应对反应的Fe(CO)(H 2 O)+离子的能量显示出显着的负依赖性,这已通过对反应池中可变氩气压力的影响进行的定量研究得到证实。