Synthesis and Some Properties of Bis(ruthenocenyl)thiophene Derivatives – Possible Spin‐Coupling in the Two‐Electron Oxidized Species of Dinuclear Ruthenocenes Bridged by Thiophene Derivatives
作者:Masaru Sato、Yusuke Kubota、Atsushi Tanemura、Genta Maruyama、Takashi Fujihara、Juzo Nakayama、Toshiyuki Takayanagi、Kenta Takahashi、Kei Unoura
DOI:10.1002/ejic.200600370
日期:2006.11
The binuclear ruthenocene derivatives bridged by thiophene, 3,4-ethylenedioxythiophene, 2,2′-bithiophene, thieno[3,2-b]thiophene, or 3,6-dimethylthieno[3,2-b]thiophene were prepared by the Suzuki coupling of 2-ruthenocenyl-4,5-tetramethyl-1,3-dioxaborolane with the corresponding diiodo compounds. In addition, thiophene- and bithiophene-bridged binuclear pentamethylruthenocenes were prepared by the
Suzuki公司制备了由噻吩、3,4-亚乙基二氧噻吩、2,2'-联噻吩、噻吩并[3,2-b]噻吩或3,6-二甲基噻吩并[3,2-b]噻吩桥接的双核钌衍生物2-ruthenocenyl-4,5-tetramethyl-1,3-dioxaborolane 与相应的二碘化合物的偶联。此外,噻吩和联噻吩桥连的双核五甲基钌分别通过双(五甲基钌基)二炔和四炔与 NaSH 反应制备。这些复合物的循环伏安图在较低电位区域(0-0.3 V 对 FcH/FcH+)表现出一步两电子氧化还原波。噻吩桥联双核钌茂衍生物的双电子氧化物种相对稳定,采用自旋耦合和结构异构化的富烯配合物型结构。双(五甲基钌基)噻吩的氧化物质的固体结构通过X-射线衍射分析确定。噻吩并 [3,2-b] 噻吩桥连的类似物在 CD3NO2 中显示出与温度相关的 1H NMR 谱。双阳离子物质在 CD3CN 中作为 RuII-RuIV 混合价物质存在。