气相二茂铁双电荷离子的动能谱研究

A STUDY OF ION KINETIC ENERGY SPECTROMETRY OF FERROCENE DOUBLY CHARGED IONS IN GAS PHASE

气相双电荷离子及其电荷转移反应在电离层化学、等离子体化学、激光及热核聚变等领域都起非常重要作用。近年来,关于双电荷离子的研究逐年增多,但多数集中在简单的正构烷烃、烯烃、胺和芳香化合物.金属有机化合物的双电荷离子的研究少见报导.Schwarz等人初步探讨了二茂铁双电荷分子离子的单分子电荷分离反应,发现了反应(b)是主要的通道。

The unimolecular charge separation reactions of the doubly charged ionsFeC_(10)H_(10)^(2+)、FeC_(10)H_9^(2+)、FeC_(10)H_8^(2+) produced in the ion source by electron impact fromferrocene have been studied using Mass analyzed Ion Kinetic Energy Spectrometry(MIKES) technique. From the values of the kinetic energy releases (T), theintercharge distances (R) of the exploding doubly charged ions in their transitionstructures have been estimated and some structural informations about the transitionstates can be obtained. The collision induced reactions of the FeC_(10)H_(10)^(2+) ion with Arhave been studied using MIKES, we postulate a new type of continuing reactionwhich may be 'collisional charge separation induced dissociation'.