【摘要】 <正> 近期研究表明,M（CO）₆（M=Cr,Mo,W）与Me₃NO作用是缔合反应,Me₃NO中氧原子亲核进攻羰基碳,使其以CO₂的形式脱离金属原子,由此产生的活性中间体M（CO）₅与外来配体快速反应生成M（CO）₅L。有关金属原子簇羰基配合物的类似反应动力学研究尚未见报道。原子簇配合物可能表现出与单核配合物不同的反应性质,并且是有效的均相催化剂,进一步了解其与Me₃NO的反应性质颇有意义。本文报道在Me₃NO存在下M₃（CO）₁₂的CO取代反应（1）的研究结果（M=Fe,Ru,Os）。更多还原

【Abstract】 Quantitative investigations are reported for the reactions of the triangular clusters M3(CO)12 (M=Fe, Ru, Os) with trimethyl amine N-oxide in the presence of phosphorous ligand. The rates of the reactions are first orders in concentrations of M3(CO)12 and of Me3NO, but zero-order in entering ligand concentration. The rates of the reactions decrease in the order Fe>Ru>Os. A mechanism is proposed which involves attack on carbonyl carbon with the formation of coordinatively unsaturated intermediates of the type M3(CO)11, which then rapidly react with the entering ligand.更多还原