Braunschweig Holger, Damme Alexander, Dück Klaus, Krummenacher Ivo, Paprocki Valerie, Radacki Krzysztof, Ramler Jacqueline, Schiller Carl, Schneider Christoph
Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
Chemistry. 2018 Feb 16;24(10):2403-2409. doi: 10.1002/chem.201704908. Epub 2018 Jan 24.
An improved, one-pot synthesis of the linear sandwich compound [Sc(η -C H )(η -C H )] is presented. The synthetic procedure is amenable to boryl- and silyl-substituted cyclopentadienyl and cyclooctatetraenyl ligands, thereby yielding the first functionalized derivatives. We found that the synthesis of the silyl-substituted mixed sandwich complexes produces higher yields when the ligand exchange is carried out stepwise, by isolating the intermediate trimethylsilylated half-sandwich complex [Sc(η -C H SiMe )Cl(THF)] (THF=tetrahydrofuran). The molecular structures of the parent complex, as well as of its mono-boryl-substituted derivatives, have been determined by single-crystal X-ray diffraction. In addition, the optical and electrochemical properties of the mixed sandwich complexes are reported.
本文介绍了一种改进的、一锅法合成线性夹心化合物[Sc(η⁵-C₅H₅)(η⁸-C₈H₈)]的方法。该合成方法适用于硼基和硅基取代的环戊二烯基和环辛四烯基配体，从而得到了首例功能化衍生物。我们发现，当通过分离中间体三甲基硅烷基化的半夹心配合物[Sc(η⁵-C₅H₄SiMe₃)Cl(THF)]（THF = 四氢呋喃）逐步进行配体交换时，硅基取代的混合夹心配合物的合成产率更高。母体配合物及其单硼基取代衍生物的分子结构已通过单晶X射线衍射确定。此外，还报道了混合夹心配合物的光学和电化学性质。
