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进行了系列同三核羧酸配合物〔Ｍ３Ｏ（Ｏ２ＣＲ）６Ｐｙ３〕Ｘ（Ｍ＝Ｃｒ，Ｍｎ，Ｆｅ；Ｒ＝ＣＨ３，Ｃ２Ｈ５，Ｃ６Ｈ５；Ｘ＝Ｃｌ－，ＣｌＯ４－；Ｐｙ为吡啶）的快原子轰击质谱（ＦＡＢ－ＭＳ）研究。获得了包括配位吡啶在内的完整阳离子峰。在研究其断裂规律时，主要观察到４个系列碎片离子：Ⅰ．〔Ｍ３Ｏ（Ｏ２ＣＲ）ｎ〕＋，ｎ＝６～２；Ⅱ．〔Ｍ３Ｏ（Ｏ２ＣＲ）ｎＯ〕＋，ｎ＝５～１；Ⅲ．〔Ｍ２Ｏ（Ｏ２ＣＲ）ｎ〕＋，ｎ＝３～１；Ⅳ．〔Ｍ２（Ｏ２ＣＲ）ｎ〕＋，ｎ＝４～２。通过对该系列配合物质谱断裂过程的比较和分析，获得了配合物稳定性随金属离子及配体的变化如下：金属离子，Ｃｒ＞Ｍｎ＞Ｆｅ；桥配基，－ＣＨ３ＣＯ２＞－Ｃ２Ｈ５ＣＯ２＞－Ｃ６Ｈ５ＣＯ２；端配基，Ｐｙ＞Ｈ２Ｏ。本研究及先前的工作〔１，８〕还为某些三核铬，铁羧酸配合物在以乙炔加水或加氢为探针反应中存在活性物种：〔Ｃｒ３Ｏ（Ｏ２ＣＲ）３～４〕，〔Ｆｅ３Ｏ（Ｏ２ＣＲ）３〕和〔Ｆｅ３Ｏ－（Ｏ２ＣＲ）Ｏ〕～〔Ｆｅ３Ｏ４〕提供了佐证
A series of fast nuclei of the same triconuclear complex [M3O (O2CR) 6Py3] X (M = Cr, Mn, Fe; R = CH3, C2H5, C6H5; X = Cl-, ClO4-; Py is pyridine) Bombardment mass spectrometry (FAB-MS) study. A complete cation peak including the coordination pyridine was obtained. In studying its rupture pattern, four series of fragment ions were observed: Ⅰ. [M3O (O2CR) n] +, n = 6 ~ 2; II. [M3O (O2CR) nO] +, n = 5 ~ 1; Ⅲ. [M2O (O2CR) n] +, n = 3 ~ 1; Ⅳ. [M2 (O2CR) n] +, n = 4 ~ 2. Through the comparison and analysis of the mass spectrometry fracture processes of the series of complexes, the changes of the stability of the complexes with the metal ions and the ligands are as follows: metal ions, Cr> Mn> Fe; bridged ligands; -CH3CO2> -C2H5CO2> C6H5CO2; terminal ligand, Py> H2O. The present work and previous work [1, 8] also present active species for certain trinuclear chromium, iron-carboxylic acid complexes in acetylene water or hydrogenation as probe reactions: [Cr3O (O2CR) 3-4] [Fe3O (O2CR) 3] and [Fe3O- (O2CR) O] ~ [Fe3O4] provide evidence