Diruthenium Metallaynes: Versatile Chromophores and Electrophores
Diruthenium Metallaynes: Versatile Chromophores and Electrophores
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DOI：
10.1080/02603590215000
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发表时间：
2002-09
影响因子：
5.4
通讯作者：
T. Ren;Guolin Xu
中科院分区：
文献类型：
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作者：
T. Ren;Guolin Xu
合成并表征了由二芳基甲脒基、2-苯胺基吡啶基或二甲基苯脒基支撑的双钌核上的单炔基和双炔基加合物。这些新的Ru 2 -金属层是高度氧化还原柔性的，可溶于常见的有机溶剂中，并且对空气、湿气和热稳定。电化学和光谱研究表明，Ru 2 -metallaynes有非常小的解决方案HOMO-LUMO间隙（1.2-1.4 eV）和高电子亲和势。Ru 2 -金属间化合物可以氧化偶联在C2C-H末端，并且所得的二聚体在多炔-二基（-C2m-）桥上表现出广泛的电子离域。研究了双-（1-二茂铁乙炔基）-加合物，发现Ru 2核促进了两个Fc末端之间的电子转移.
Both the {\rm mono} - and {\rm bis} -alkynyl adducts on a diruthenium core supported by either diarylformamidinate, or 2-anilinopyridinate, or dimethylbenz amidinate have been synthesized and characterized. These novel Ru 2 -metallaynes are highly redox flexible, soluble in common organic solvents and stable towards air, moisture and heat. Electrochemical and spectroscopic studies revealed that the Ru 2 -metallaynes have exceptionally small solution HOMO-LUMO gaps (1.2-1.4 eV) and high electron affinities. Ru 2 -metallaynes can be oxidatively coupled at ≡C-H termini, and the resultant dimers exhibit an extensive electronic delocalization across the polyyne-diyl (-C 2m -) bridge. Study of a bis-(1-ferrocenylethynyl)-adduct revealed that the Ru 2 core facilitates electron transfer between two Fc termini.