Enantiomerically Pure Cyclopentadienyl- and Indenyl-Functionalized N-Heterocyclic Carbene Complexes of Iridium and Rhodium

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• 作者：Andre虂 P. da Costa ; Rita Lopes ; Joa虄o M. S. Cardoso ; Jose A. Mata ; Eduardo Peris ; Beatriz Royo
• 刊名：Organometallics
• 出版年：2011
• 出版时间：August 22, 2011
• 年：2011
• 卷：30
• 期：16
• 页码：4437-4442
• 全文大小：813K
• 年卷期：v.30,no.16(August 22, 2011)
• ISSN：1520-6041

文摘

Novel enantiomerically pure cyclopentadienyl- and indenyl-functionalized N-heterocyclic carbene ligands have been prepared by reaction of a chiral imidazole tosylate derivative with the corresponding cyclopentadienyl and indenyl lithium salts. Coordination of the Cp-functionalized NHC ligand to iridium and rhodium allowed the preparation of enantiomerically pure chelating cyclopentadienyl-functionalized Ir(III) and Rh(III) metal complexes. In contrast, the indenyl-functionalized NHC coordinates to iridium in a monodentate fashion, giving an Ir(I)-NHC complex containing a dangling indene group.