期刊
DALTON TRANSACTIONS
卷 46, 期 17, 页码 5702-5710出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt04921d
关键词
-
资金
- National Science Foundation [CHE-1565648]
- EXCEL scholars program
- Kresge Foundation
- NSF [1362999]
- Direct For Mathematical & Physical Scien [1362999] Funding Source: National Science Foundation
- Division Of Chemistry [1362999] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1565648] Funding Source: National Science Foundation
The ligand 1,1'-bis(diphenylphosphino) ferrocene (dppf) is commonly employed in a variety of catalytic systems. There are a variety of coordination modes known for dppf, the least studied being the kappa(3) coordination mode, in which both phosphorus atoms and the iron atom of dppf interact with another metal center. One such compound is the previously reported [Pd(kappa(3)-dppf)(PPh3)](2+). A series of related compounds, [Pd(kappa(3)-dppf)(P(p-C6H4R)(3))](2+) (R = OCH3, CH3, F and CF3), has been synthesized and characterized. The X-ray crystal structure of [Pd(dppf)(P(p-C6H4F)(3))][BF4](2) was determined. Electrochemical and computational studies indicate that the electron donor ability of the P(p-C6H4R)(3) ligands influences the properties of these compounds. Substitution reactions of the P(p-C6H4R)(3) ligands have been examined, and, in general, the more electron donating P(p-C6H4R)(3) ligands completely replace the less electron donating ones. The kinetics of the reaction of [Pd(kappa(3)-dppf)P(p-C6H4R)(3)](2+) with P(p-C6H4OCH3)(3) indicate that the reaction proceeds through a dissociative mechanism, contrary to the associative substitutions prevalent in square planar palladium(II) chemistry.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据