Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, 66123 Saarbrücken, Federal Republic of Germany.
Dalton Trans. 2018 Aug 21;47(31):10425-10428. doi: 10.1039/c8dt02491j. Epub 2018 Jul 10.
Several new sila[2]aluminocenophane Lewis base complexes are described, which were synthesized directly from the corresponding sila[2]magnesocenophane and AlX·base precursors. The compounds are stable at room temperature for weeks, and were characterized in solution by multinuclear NMR spectroscopy and in the solid state by single crystal X-ray diffraction. In all cases, a dynamic structure was observed in solution, due to rapid sigmatropic rearrangements. Bonding energies of the Lewis base ligands to the aluminium center were calculated to be 162.9-213.3 kJ mol.
描述了几种新型的硅[2]茚并茂铁路易斯碱配合物，它们是直接从相应的硅[2]二茂镁和 AlX·碱前体制备的。这些化合物在室温下稳定数周，通过多核 NMR 光谱在溶液中，通过单晶 X 射线衍射在固态下进行了表征。在所有情况下，由于快速的西格玛重排，在溶液中观察到动态结构。路易斯碱配体与铝中心的键合能计算为 162.9-213.3 kJ mol.
