【摘要】 本文综述偶电子离子的单分子反应。对偶电子离子中的鎓离子和碳烯离子都进行了讨论。对鎓离子的命名和结构作了简单介绍。为说明偶电子离子反应的特点,在适当之处和奇电子离子进行了比较。论述了低能(亚稳离子)或高能离子(碰撞活化离子)的单分子反应。此外,简单地讨论了奇电子或偶电子断裂三种典型的重要反应,即化学电离中官能团的脱去,麦氏重排和逆Diels-Alder反应,更多还原

【Abstract】 A review of the unimolecular reactions of even electron ions is presented.Both "onium" and carbenium ions are treated. The nomenclature and structureof the former is briefly touched. A comparison between the unimolecularreactions of even electron ions and those of their odd electron counterparts ismade where appropriate. Low energy (metastable ions) or high energy (colli-sionally activated) unimolecular reactions are reviewed. Besides, three types ofreactions which are typical and important either in the fragmentation of evenelectrons or in the odd electron ones, viz. the loss of functional groups inchemical ionization, McLafferty rearrangement and retro-Diels-Alder reactionare discussed.更多还原