N-Heterocyclic Carbene Coinage Metal Complexes as Intense Blue-Green Emitters

详细信息    查看全文

• 作者：M. Concepci贸n Gimeno ; Antonio Laguna ; Renso Visbal
• 刊名：Organometallics
• 出版年：2012
• 出版时间：October 22, 2012
• 年：2012
• 卷：31
• 期：20
• 页码：7146-7157
• 全文大小：575K
• 年卷期：v.31,no.20(October 22, 2012)
• ISSN：1520-6041

文摘

The reaction of N-methyl (Me) or N-benzyl (Bn) imidazole with 9-chloroacridine (9-ClAcr) gives the corresponding imidazolium salts, [(RimAcr)H]Cl (R = Me, Bn), which can further react with AgBF₄ or [Au(C₆F₅)(tht)], affording the new salts [(RimAcr)H]BF₄ or [(RimAcr)H][Au(C₆F₅)Cl]. Silver(I) carbene complexes of the form [AgCl(RimAcr)] or [Ag(RimAcr)₂]BF₄ are synthesized by reaction of the corresponding imidazolium salts with Ag₂O or Ag₂O and NaOH. Transmetalation reactions allow the synthesis of the gold and copper derivatives [MCl(RimAcr)] (M = Au, Cu) and [Au(RimAcr)₂]BF₄. Treatment of [(RimAcr)H][Au(C₆F₅)Cl] with NaH affords the synthesis of the carbene complexes [Au(C₆F₅)(RimAcr)]. The crystal structures of these complexes show interesting 蟺路路路蟺 stacking interactions between the acridine and/or the pentafluorophenyl groups. The imidazolium salts and the gold and silver complexes are intense blue-green emitters.