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Pyridine-Based N-Heterocyclic Carbene Hydride Complexes of Iridium via C-H Activation
Song, Guoyong1; Zhang, Yao1; Su, Yan2; Deng, Weiqiao1; Han, Keli2; Li, Xingwei1; Xingwei Li
刊名ORGANOMETALLICS
2008-12-08
DOI10.1021/om800756c
27期:23页:6193-6201
收录类别SCI ; IC ; CCR
文章类型Article
部门归属11
项目归属1101
产权排名2;3
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Inorganic & Nuclear ; Chemistry, Organic
研究领域[WOS]Chemistry
关键词[WOS]TRANSFER HYDROGENATION ; ALPHA,BETA-UNSATURATED ESTERS ; COORDINATION CHEMISTRY ; LIGAND ; PALLADIUM(II) ; RHODIUM ; IRH5(PPH3)(2) ; HETEROATOM ; CATALYSIS ; 3-PYRIDYL
英文摘要A series of iridium(III) hydride complexes of chelating pyridine-based N-heterocyclic carbenes (py-NHCs) and remote N-heterocyclic carbenes (remote py-NHCs) were synthesized as stable products from the C-H oxidative addition reactions of pyridine-tethered pyridinium halides and [Ir(COD)(2)](+). X-ray crystal structures of representative iridium py-NHC and remote py-NHC complexes were determined and in all cases mutual cis orientations of the halide and hydride ligands were observed in the solid state. In the solution phase, the cis isomer was observed as the only product for each iridium(III) py-NHC complex, whereas both cis and trans isomers have been observed as equilibration mixtures for iridium(III) remote py-NHC complexes. No beta-insertion of the hydride into a C=C bond of the COD unit of iridium(III) py-NHC hydride complexes was observed, and theoretical studies indicate that this step is thermodynamically unfavorable. Iridium(III) py-NHC hydride complexes have shown high catalytic activity in transfer hydrogenation of ketone and enones. Computational studies of the donor capacity of those ligands indicate that py-NHCs are more donating than imidazole-derived NHCs.
语种英语
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WOS记录号WOS:000261142000019
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被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/101469
专题中国科学院大连化学物理研究所
通讯作者Xingwei Li
作者单位1.Nanyang Technol Univ, Div Chem & Biol Chem, Sch Math & Phys Sci, Singapore 637371, Singapore
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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GB/T 7714
Song, Guoyong,Zhang, Yao,Su, Yan,et al. Pyridine-Based N-Heterocyclic Carbene Hydride Complexes of Iridium via C-H Activation[J]. ORGANOMETALLICS,2008,27(23):6193-6201.
APA Song, Guoyong.,Zhang, Yao.,Su, Yan.,Deng, Weiqiao.,Han, Keli.,...&Xingwei Li.(2008).Pyridine-Based N-Heterocyclic Carbene Hydride Complexes of Iridium via C-H Activation.ORGANOMETALLICS,27(23),6193-6201.
MLA Song, Guoyong,et al."Pyridine-Based N-Heterocyclic Carbene Hydride Complexes of Iridium via C-H Activation".ORGANOMETALLICS 27.23(2008):6193-6201.
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