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本文报道六核锇排状平面原子簇的合成和活化。三核锇活性原子簇[Os_3(CO)_(10)(MeCN)_2]在PdCl_2催化作用下发生偶联反应,生成具有活性的六核锇排状原子簇[Os_6(CO)_(20)(MeCN)]和[Os_6(CO)_(19)(MeCN)_2]。用氧化三甲胺(Me_3NO)对活性原子簇中羰基配位基进行多重活化,获得一系列具有活性的六核锇排状原子簇[Os_6(CO)_(21-n)(MeCN)_n](n=1—5)及其相应的配位体取代反应产物[Os_6(CO)_(21-n)(P(OMe)_3)_n](n=1—5)。并通过红外光谱、核磁共振波谱和质谱等数据对上述排状原子簇进行结构表征,同时就其排状平面结构和反应性能特点进行讨论。
This paper reports the synthesis and activation of hexagonal osmium-like planar planar clusters. The catalytic activity of trinuclear osmium [Os_3 (CO) _ (10) (MeCN) _2] catalyzed the coupling reaction of hexaenuclear osmium [Os_6 (CO) _ (20) (MeCN)] and [Os_6 (CO) _ (19) (MeCN) _2]. A series of activated hexanuclear osmium clusters [Os_6 (CO) _ (21-n) (MeCN) _n] were obtained by multiple activation of carbonyl ligands in the active clusters with trimethylamine oxide (Me_3NO) n = 1-5) and their corresponding ligands to replace the reaction product [Os_6 (CO) _ (21-n) (P (OMe) _3) _n] (n = 1-5). The above cluster of clusters were characterized by FTIR, NMR and mass spectrometry. At the same time, their planar structure and reaction performance were discussed.