Stepwise and one-pot syntheses of Ir(<scp>iii</scp>) complexes with imidazolium-based carbene ligands
作者:Chih-Hsien Chien、Singo Fujita、Suguru Yamoto、Takeshi Hara、Tsuneaki Yamagata、Masami Watanabe、Kazushi Mashima
DOI:10.1039/b712901g
日期:——
treatment of [Ir(mu-Cl)(COD)]2, where COD is 1,5-cyclooctadiene, with 4 equiv. of the corresponding carbene (Cinsertion markC:) ligands in the presence of an excess amount of sodium methoxide affords Ir(III) dimers [Ir(mu-Cl)(Cinsertion markC:)2]2 (2a, Cinsertion markC: = pypi(-); 2b, Cinsertion markC: = pympi(-)). These chloro-bridged dimers 2a and 2b react with the corresponding carbene (Cinsertion
我们报告的制备,晶体结构,电化学和Ir(Cinsertion markC:)3的发射性能,其中Cinsertion markC:是一个N-杂环卡宾配体。引入了两种合成方法来生成带有咪唑基卡宾配体的Ir(III)配合物,其前体为[pypiH2] [Cl](1a)(吡啶基[1,2-a] 2-苯基咪唑} -3-偏二氯乙烯)和[pympiH2] [Cl](1b)(吡啶基[1,2-a- 2-(对甲氧基)苯基咪唑} -3-亚二氯乙烷)。第一种方法是逐步反应:用4当量处理[Ir(mu-Cl)(COD)] 2,其中COD为1,5-环辛二烯。过量甲醇钠的存在下,相应的卡宾(插入标记C :)配体得到Ir(III)二聚体[Ir(mu-Cl)(插入标记C:)2] 2(2a,插入标记C:= pypi( -); 2b,插入标记C:= pympi(-))。这些氯桥二聚体2a和2b与相应的卡宾(插入标记C :)配体反