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三核钼簇合物的质谱研究

三核钼簇合物的质谱研究[J]. 质谱学报, 1993, 14(3): 38-38.
引用本文: 三核钼簇合物的质谱研究[J]. 质谱学报, 1993, 14(3): 38-38.
study on Mass Spectra of Trinuclear Molybdenum Clusters[J]. Journal of Chinese Mass Spectrometry Society, 1993, 14(3): 38-38.
Citation: study on Mass Spectra of Trinuclear Molybdenum Clusters[J]. Journal of Chinese Mass Spectrometry Society, 1993, 14(3): 38-38.

三核钼簇合物的质谱研究

study on Mass Spectra of Trinuclear Molybdenum Clusters

  • 摘要: 本文通过快原子轰击质谱研究[Mo_3S_7(dtp)_3]Cl(dtp=S_2P(OEt)_2),获得去Cl原子含有簇芯Mo_3S_7的系列碎片离子。又通过化学衍生方法,对难汽化的[Mo_2S_4(dtp)_4)Py簇合物进行化学修饰,获得易挥发的[Mo_3S_4(RCO_2)(dtp)_3]Py,其中R=H,C_2H_5,Py=NC_5H_5。该簇合物的电子轰击谱表明,除按正常的单分子分解而出现的系列碎片离子外,还发现该簇合物中μ_3—S被μ_3—O取代质量数相差16amu系列碎片离子簇峰即[Mo_3OS_3(RCO_2)_(1→0)(dtp)_(3→2)]~+。最后,对O帽取代S帽的可能机制作了探讨。
    Abstract: The paper reported fast bombardment mass spectra of [Mo_3 S_7 (S_2P(OEt)_2)_3] C1 and obtained satistactory mass spectra. The spectra exhibit six very broad peak groups over a wide range of m/z values for each ion species due to the polyisotopic character of Mo but also ~(13)C and ~(24)S. We also obtained satisfactory mass spectra when using conventional electron impact ionization mass spectra for [Mo_3 S_4 (RCO_2) (S_2P (OEt)_2)_3] Py (R=H, C_2H_5, Py=NC_5H_5). It is found that two types of broad peak groups which come from [Mo_3 OS_3(RCO_2)(S_2P(OEt_2)_3]Py due to theμ_3—S atom exchanged with μ_3—O atom in [Mo_3S_4(RCO_2)(S_2P(OEt)_2)_3Py and according to normal unimolecular ion decomposition of [Mo_3S_4 (RCO_2) (S_2P (OEt)_2)_3]Py. Finally we discussed the problem about the 'oxygen-source' in the experiment of mass spectrometry.
  • 1 卢嘉锡等.结构化学,1989;8:327
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出版历程
  • 收稿日期:  1992-08-11
  • 刊出日期:  1993-08-31

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