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在自制的仪器上以脉冲激光溅射铁、钌、锇的三核羰基原子簇化合物，由原位质谱观察和分析溅射产生的正负离子．比较了解离碎片及分布发现羰基锇原子簇化合物具有特殊的结构稳定性，它们不仅具有很强的金属键，而且锇与羰基分子还形成了很强的配位键．铁和钌的原子簇在解离中脱落羰基配体，碎裂成双核以至单核的碎片离子．而锇原子则先离解掉氧分子，形成新的Ｃ２桥连配体，且正、负离子质谱有显著差异，在正离子质谱中能观察到分子离子峰，而在负离子质谱中则只有解离产物
The pulsed laser was used to sputter the trinuclear carbonyl cluster compounds of iron, ruthenium and osmium on homemade instruments, and the positive and negative ions generated by sputtering were observed and analyzed by in situ mass spectrometry. It is found that the carbonyl osmium clusters have a special structural stability. They not only have strong metal bonds, but also form strong coordination bonds between osmium and carbonyl molecules. The clusters of iron and ruthenium shed off carbonyl ligands during dissociation, fragmenting into dinuclear and mononuclear fragment ions. While the osmium atoms first dissociate oxygen molecules to form a new C2 bridged ligand, and the positive and negative ion mass spectra are significantly different, positive ion mass spectrometry can be observed in the molecular ion peak, and in negative ion mass spectrometry, only dissociation products