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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Electrospray Mass Spectrometry Studies of Purified Aluminum Tridecamer in a 50:50 Water/Acetonitrile Mixture
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Electrospray Mass Spectrometry Studies of Purified Aluminum Tridecamer in a 50:50 Water/Acetonitrile Mixture

机译：50:50水/乙腈混合物中纯铝Tridecamer的电喷雾质谱研究

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This study conducted electrospray ionization mass spectrometry (ESI-MS) tests on 90-95% pure [AlO4Al12(OH)24(H2O)12]Cl7 (Al13) salt dissolved in a 50:50 v/v water/acetonitrile solution. Acetonitrile typically replaces the ligated aqua ligands and adducts to the aluminum center, leading to aluminum tridecamer breakdown. The chloride anions cannot coordinate with the aluminum center in the presence of acetonitrile molecules. The acetonitrile deconstructs the “cagelike” aluminum tridecamer structure into smaller polymeric species, which are further transformed into a brucite-like structure. The present work obtained the mass spectra of incremental difference of 18u for fresh solution and of 9u for aged solution in the m/z ) 200-900 regime, providing support to the occurrence of water ligand exchange reaction during aluminum tridecamer decomposition.
机译：这项研究对溶解在50:50 v / v水/乙腈溶液中的90-95％的纯[AlO4Al12（OH）24（H2O）12] Cl7（Al13）盐进行了电喷雾电离质谱（ESI-MS）测试。乙腈通常会取代连接的水配位体和加合物至铝中心，从而导致铝十三烷分解。在存在乙腈分子的情况下，氯离子不能与铝中心配位。乙腈将“笼状”铝三聚体结构解构为较小的聚合物，然后进一步转变为水镁石状结构。在m / z）200-900范围内，本研究获得了新鲜溶液18u和老化溶液9u的增量差的质谱图，为在十三聚体铝分解过程中发生水配体交换反应提供了支持。

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