摘要
本文报导了四个含μ_3-S的铁,钴,钼异核簇羰基衍生物([FeCo_2S(CO)_9],[H_2Fe_2CoS(CO)_9],[FeCoMosCp(CO)_8]和[FeCoMos(Cp’COCH_3)(CO)_8],Cp=C_5H_5,Cp’C_5H_4)的质谱,并基于第一无场区亚稳跃迁和同位素峰丰度分布等数据讨论了其主要的断裂行为,发现在电子轰击下这些化合物的簇骼键的断裂反应与共价金属离子半径和μ_3-S配体存在有关。
Mass spectra of four μ3-S(Fe-Co-Mo) heteronuclear cluster carbonyl deriyatives, ([Fe-Co2S(CO)9], [H2Fe2CoS(CO)9], [FeCoMoSCp(CO)8] and [FeCoMoS(Cp'COCH3) (CO)8] ,Cp = C5H5, Cp' = C5H4) have been obtained and thier main fragmentation behaviors are discussed based on the information of metastable transition in the 1st FFR and the calculation of the masses of various combinations of isotopic elements and thier relative abundances. It is found that the cleavage of cluster core bonds is related to covalance metal ion radius and bridged sulfur ligand.
