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Synthesis and Substitution Kinetics of Tricarbonylrhenium(I) Dendritic Complexes
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2017-09-07 , DOI: 10.1002/ejic.201700661
Siphelele Malaza 1 , Preshendren Govender 1 , Marietjie Schutte-Smith 2 , Hendrik G. Visser 2 , Gregory S. Smith 1
Affiliation  

Tricarbonylrhenium(I) metallodendrimers functionalized with N,N-2-picolylamino chelates have been synthesized by the [2+1] approach. Methanol substitution reactions of the first- and second-generation poly(propylene amine) tetra- and octanuclear rhenium metallodendrimers by a range of monodentate nucleophiles (i.e. 4-dimethylaminopyridine, pyridine, and bromide ions) were investigated and compared to the substitution reactions of an analogous monomeric complex, fac-[Re(CO)3(N,N-bidentate)(CH3OH)]+. These detailed kinetic studies reveal that a greater activation is achieved using the metallodendrimers with no direct interactions between the metal centers.

中文翻译:

三羰基铼(I)树枝状配合物的合成及取代动力学

已通过 [2+1] 方法合成了用 N,N-2-吡啶甲氨基螯合物功能化的三羰基铼 (I) 金属树枝状聚合物。研究了第一代和第二代聚(丙胺)四核和八核铼金属树枝状聚合物被一系列单齿亲核试剂(即 4-二甲氨基吡啶、吡啶和溴离子)的甲醇取代反应,并与类似的单体复合物,fac-[Re(CO)3(N,N-二齿)(CH3OH)]+。这些详细的动力学研究表明,使用金属树枝状大分子可以实现更大的活化,而金属中心之间没有直接相互作用。
更新日期:2017-09-07
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