| M3（CO）12（M=Fe,Ru,Os）的氧原子转移反应动力学 |
| |
| 引用本文： | 申建坤,师颜龙.M3（CO）12（M=Fe,Ru,Os）的氧原子转移反应动力学[J].高等学校化学学报,1989,10(3):322-324. |
| |
| 作者姓名： | 申建坤 师颜龙 |
| |
| 作者单位： | 兰州大学化学系
(申建坤，师颜龙，高忆慈，史启祯)，美国西北大学化学系(Fred Basolo) |
| |
| 摘 要： | 近期研究表明,M(CO)_6(M=Cr,Mo,W)与Me_3NO作用是缔合反应,Me_3NO中氧原子亲核进攻羰基碳,使其以CO_2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Me_3NO的反应性质颇有意义。本文报道在Me_3NO存在下M_3(CO)_(12)的CO取代反应(1)的研究结果(M=Fe,Ru,Os)。
|
| 关 键 词： | 金属羰基化物 氧化三甲胺 动力学 |
Kinetics and Mechanism of Oxygen Atom Transfer Reactions to M_3 (CO)_(12) (M =Fe,Ru,Os) |
| |
| Shen Jiankun,Shi Yianlong,Gao Yici,Shi Qizhen.Kinetics and Mechanism of Oxygen Atom Transfer Reactions to M_3 (CO)_(12) (M =Fe,Ru,Os)[J].Chemical Research In Chinese Universities,1989,10(3):322-324. |
| |
| Authors: | Shen Jiankun Shi Yianlong Gao Yici Shi Qizhen |
| |
| 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. |
| |
| Keywords: | Trimethyl amine N-oxide Metal carbonyls Kinetics and mechanism |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
