Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstrasse 4, 37077, Göttingen, Germany.
Angew Chem Int Ed Engl. 2017 Nov 20;56(47):15141-15145. doi: 10.1002/anie.201706316. Epub 2017 Oct 23.
The bulky bis(4,6-tBu-benzoxazol-2-yl)methane ligand system enabled the synthesis of the water-containing organometallic potassium complex [(18-crown-6)K{(4,6-tBu-OCNC H ) CH}⋅H O] (2), which is an unprecedented example of a water-stable reactive organopotassium compound. Furthermore, 2 is a rare example of a bis(benzoxazol-2-yl)methanide ligand displaying solely O-coordination to a metal ion. Compound 2 was fully characterized through its solid-state structure. Furthermore, its behavior in solution was investigated by NMR titration DOSY experiments. These revealed full protonation of the complex only after seven days and the addition of 114 equivalents of water.
庞大的双(4,6-二叔丁基苯并恶唑-2-基)甲烷配体系统使含有水的有机金属钾配合物[(18-冠-6)K{(4,6-tBu-OCNC H ) CH}⋅H O]（2）的合成成为可能，这是首例水稳定的反应性有机钾化合物。此外，2 还是双(苯并恶唑-2-基)甲烷配体仅与金属离子配位的 O 配位的罕见实例。通过其固态结构对化合物 2 进行了充分的表征。此外，通过 NMR 滴定 DOSY 实验研究了其在溶液中的行为。这些结果表明，仅在七天后且加入 114 当量的水后，复合物才完全质子化。
