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[NEt4][V2Fe2S4(Me2dtc)5]族合物的FAB质谱研究(Me2dtc=S2CNMe2)
Fast Atom Bombardment Mass Spectrometry of Metal Cluster Compound [NEt4][V2Fe2S4(Me2dtc)5](Me2dtc=S2CNMe2)
【摘要】 本文报道了标题簇合物阴离子[V2Fe2S4(Me2dtc)5]-在FAB质谱条件下,存在两种不同的质谱断裂方式:(1)保持簇阴离子骨架,逐步失去配体Me2dtc或其它碎片NMe2而生成的各级碎片离子;(2)破坏簇阴离子[V2Fe2S4(Me2dic)5]的骨架,即沿簇阴离子的薄弱的M(金属)-S(无机硫)键,劈裂为两个亚簇而产生的碎片离子,以及由碎片重组反应而生成的碎片离子m/z296(8.47%)Fe(Me2dtc)2.本文还讨论了簇阴离子在簇解还原过程中,金属原子及其簇芯表观氧化态变化。
【Abstract】 The paper reports two degradation patterns of metal cluster [V2Fe2S4(Me2dtc)5]-in FABMS: (1)the cluster skeleton is preserved but stepwisely lost the ligand Me2dtc or other fragment NMe2;(2)the cubane-like cluster [V2Fe2S4(Me2dtc)5]- is cracted into two sub-cluster fragment ions along the weaker metal -sulphur bonds in the cubane skeleton. These FABMS also exhibit fragment ion Fe (Me2dtc)5 resulting from the re-combination reactions of fragment species.
- 【文献出处】 质谱学报 ,JOURNAL OF CHINESE MASS SPECTROMETRY SOCIETY , 编辑部邮箱 ,1997年01期
- 【分类号】O657.6
- 【下载频次】13