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学科主题: 金属有机化学
题名: Cationic Palladium(II) Complexes of Phosphine-Sulfonamide Ligands: Synthesis, Characterization, and Catalytic Ethylene Oligomerization
其他题名: 膦、磺酰胺配体及其阳离子钯化合物合成, 表征及其催化乙烯齐聚研究
作者: Zhang YL(张延路)1; Cao YC(曹艳春)1; Leng XB(冷雪冰)1; Chen CL(陈昶乐)1; Huang Z(黄正)1
通讯作者: 陈昶乐 ; 黄正
刊名: Organometallics
发表日期: 2014
DOI: 10.1021/om5004094
卷: 33, 期:14, 页:3738-3745
收录类别: SCI
英文摘要: A series of cationic palladium(11) complexes bearing phosphine sulfonamide ligands, RP,O)PdMe(lutidine)][SbF6], were synthesized and used for catalytic ethylene oligomerization. The molecular structure of the complex {[N,N-dicyclohexyl-2-(diphenylphosphanyl)benzenesulfonamide]PdMe(lutidine)}[SbF6] shows that the phosphorus atom and the oxygen atom coordinate to the palladium center. The ethylene oligomerization behavior is greatly influenced by the phosphino substituents, while the substituents on sulfonamide show only minimal effects. Complexes containing the diphenylphosphanyl group are highly selective for ethylene dimerization, affording 1-butene exclusively with moderate activity. The bulkier bis(2-methoxyphenyl)phosphanyl group leads to higher activity and gives alpha-olefins containing mainly 1-butene and 1-hexene, with a 1-hexene content of up to 35%. The palladium complexes bearing alkyl phosphino substituents give 1-butene and 1-hexene as the major products; a small amount of 2-butene (<5%) was observed, suggesting the occurrence of chain walking. The addition of B(C6F5)(3) greatly enhances the catalytic activity. Experimental results suggest that the increase in activity is likely due to the abstraction of lutidine, not from the coordination of B(C6F5)(3) to the sulfonamide oxygen atom.
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/39078
Appears in Collections:金属有机化学国家重点实验室_期刊论文

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作者单位: 1.中科院上海有机化学研究所
2.中国科学技术大学

Recommended Citation:
Zhang YL,Cao YC,Leng XB,et al. Cationic Palladium(II) Complexes of Phosphine-Sulfonamide Ligands: Synthesis, Characterization, and Catalytic Ethylene Oligomerization[J]. Organometallics,2014,33(14):3738-3745.
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