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随着多金属氧簇化学的发展,迫切需要将多金属氧簇的液相反应过程和固相结构有机结合起来,以便更好地指导功能导向性多金属氧簇的设计与合成。传统的分析方法对一些特殊结构的多金属氧簇以及溶液自组装机理的研究具有局限性。随着软电离技术的发展,尤其是电喷雾电离(ESI)和基质辅助激光解吸电离(MALDI)的发明,质谱(MS)技术越来越多应用在简单无机化合物、配合物及金属有机化合物的研究中。多金属氧簇属无机高分子,是一类结构较特殊的无机配合物,多阴离子自身常带多个负电荷。钼、钨等具有较多同位素,可方便通过理论模拟与实际测量同位素分布的对比确定簇离子的准确组成。本文综述了质谱技术在多金属氧簇化学中的应用,如ESI-MS分析多阴离子在溶液中存在形式、监测反应过程、推断自组装机理,并对其在多金属氧簇化学中的应用前景进行了展望。
With the development of polyoxometalate chemistry, it is urgent to organically combine the liquid phase reaction process of polyoxometalate with the solid phase structure in order to better guide the design and synthesis of functionally oriented polyoxometalate. The traditional analytical methods have some limitations on the research of some special structures of polyoxometalates and their self-assembly mechanism. With the development of soft ionization technology, especially the invention of electrospray ionization (ESI) and matrix assisted laser desorption ionization (MALDI), mass spectrometry (MS) technology is increasingly used in simple inorganic compounds, complexes and metal organic compounds researching. Polyoxometalates are inorganic polymers. They are a kind of inorganic complexes with special structures. Polyanions often have multiple negative charges themselves. Molybdenum, tungsten and other isotopes more easily determine the exact composition of cluster ions by comparing the theoretical simulation with the actual measurement of isotope distribution. In this paper, the applications of mass spectrometry in polyoxometalate chemistry are summarized. For example, ESI-MS analyzes the existence of polyanions in solution, monitors the reaction process, deduces the self-assembly mechanism and foregrounds its application in polyoxometalate chemistry Prospects.