1-methyl-3-phenylbenzimidazolium methylsulfate | 1173171-88-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 1-methyl-3-phenylbenzimidazolium methylsulfate
• CAS: 1173171-88-4
• 化学式: CH₃O₄S*C₁₄H₁₃N₂
• 分子量: 320.369
• InChiKey: JTLZCKVZJURDJH-UHFFFAOYSA-M

反应信息

• 作为反应物：
  描述：

  bis(1,5-cyclooctadiene)diiridium(I) dichloride 、 1-methyl-3-phenylbenzimidazolium methylsulfate 在 NaN(Si(CH₃)3)2 作用下， 以 四氢呋喃 为溶剂， 以78%的产率得到[Ir(COD)(Cl)(1-methyl-3-phenylbenzimidazolylidene)]
  参考文献：
  名称：

  Bimetallic N-Heterocyclic Carbene−Iridium Complexes: Investigating Metal−Metal and Metal−Ligand Communication via Electrochemistry and Phosphorescence Spectroscopy

  摘要：

  Bimetallic [Ir(COD)Cl] and [Ir(ppy)(2)] (COD = 1,5-cyclooctadiene; ppy = 2-phenylpyridyl) complexes bridged by 1,7-dimethyl-3,5-diphenylbenzobis(imidazolylidene) (1), in addition to their monometallic analogues supported by 1-methyl-3-phenylbenzimidazolylidene (2), were synthesized and studied. Electrochemical analyses indicated that 1 facilitated moderate electronic coupling between [Ir(COD)Cl] units (Delta E = similar to 60 mV), but not [Ir(ppy)(2)], The metal-based oxidation potentials for the bimetallic complexes were within 20 mV of those for their monometallic analogues. Furthermore, spectroscopic analyses of the [Ir(ppy)(2)] bimetallic and monometallic complexes revealed nearly identical phosphorescence profiles, indicating that carbene coordination does not affect the energy of the emissive states. Collectively, these results suggest that N-heterocyclic carbenes (NHCs) such as 1 could link together two emissive fragments without altering their fundamental phosphorescence profiles. Ultimately, employing multitopic NHCs as non-interfering molecular connectors could facilitate the rational design of new phosphorescent materials as well as second-generation phosphor dopants.

  DOI：

  10.1021/ic900391q