立方烷型四核钼簇合物和含吡咯啶二氨基甲酸二核钼簇合物的质谱研究

Mass Spectrometric Studies of Four and Two Nuclear Molybdena Clusters

有关过渡金属簇合物的＇活性元件＇组装设想提出后，围绕它而进行的种种设计合成打破了以往那种自兜反应（一种机制未明反应）的盲目性，为化学合成打开了一条新途径。但＇活性元件＇究为何物，它又如何进行组装，这正是合成化学工作者所望解决的。由于质谱法的特点，采用质谤法有可能为＇活性元件＇或反应中间物种提供有价值的信息，为簇骼转换提供理论依据。本文在三核钼簇合物研究［１］基础上继续对二核钼和四核钼簇合物作进一步的质谱研究。

The research results of three topics are reported in this paper:(1)FABMS and its correlation to cluster conversion for[α-Mo4OS3(μ-dtP)3] and this correlation shows that the information of fragment ions provided by mass spectrometry could be directly used to probe the mechanism of cluster conversion in synthetic reaction;(2)according to the rule in the mass spectrometry of inorganic and organometallic compounds that the dominant ions are formed with a minimal Perturbation to the formal oxidation state of the metal in compound under ionization,the relations between the fragment ions and its fermal oxidation state for[α-Mo4OS3(μ-dtp)3)] under FAB ionization are proposed;(3)the possible fragmentation pathways of both two nuclear molybdena clusters Mo2OS3(S2CNC4H3)2 and Mo2O2S2(S2CNC4H8)2 under DIP ionization are also proposed.