The First Phenanthrene-Fused Imidazol-2-ylidene and Its Transition-Metal Complexes
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- 作者：Daniela Tapu ; Clayton Owens ; Donald VanDerveer ; Kevin Gwaltney
- 刊名：Organometallics
- 出版年：2009
- 出版时间：January 12, 2009
- 年：2009
- 卷：28
- 期：1
- 页码：270-276
- 全文大小：211K
- 年卷期：v.28,no.1(January 12, 2009)
- ISSN：1520-6041
文摘
A new phenanthrene-fused N-heterocyclic carbene was generated and characterized in solution. The synthesis of air-stable Rh, Ir, and Ag complexes, supported by the new phenanthrene-fused imidazol-2-ylidene ligand, is described. Deprotonation of phenanthrene-fused imidazolium salt 4 in the presence of [M(COD)Cl]2 (M = Rh, Ir) afforded complexes 6 and 7 in excellent yields. The silver complex was obtained by reaction of 4 with Ag2O. The solid state molecular structures of these complexes have been determined by X-ray diffraction studies. The fluorescence emission spectra of 4, 6, and 7 are compared to that of phenanthrene.