Han Hui, Liu Xin-Ran, Gao Yan-Mei, Liang Sha-Sha, Jing Yi, Li Hai-Jun, Chen Xuenian
College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001, China.
School of Chemistry and Chemical Engineering, Henan Key Laboratory of Boron Chemistry and Advanced Materials, Henan Normal University, Xinxiang, Henan 453007, China.
Inorg Chem. 2024 Jul 29;63(30):13886-13892. doi: 10.1021/acs.inorgchem.4c00945. Epub 2024 Jul 16.
Polyhedral boranes have potential applications in medicine and material science due to their unique structure and stability. However, tedious and low-yield synthetic methods limited their application. Herein, we have developed a facile large-scale synthetic method for M[BH] (M = Na, K) by the reaction of MBH with ,-dipropylaniline borane in diglyme at 120 or 140 °C in up to 88% yield. The mechanistic studies indicated that intermediates, such as [BH] and [BH], were formed in the formation process of [BH] anion, similar to previously reported. The formation of BH from the ,-dipropylaniline borane adducts is most important. The developed method avoided using toxic materials, with high yield, easily scaled up, raw materials are readily available. Additionally, the starting material, ,-dipropylaniline, could be repeatedly used at least three times with similar yields, which is an economical way to facilitate industrial synthesis. It is believed that this method will support further application of Na[BH] and K[BH] as solid electrolytes for an all-solid-state batteries.
多面体硼烷因其独特的结构和稳定性在医学和材料科学领域具有潜在应用。然而，繁琐且低产率的合成方法限制了它们的应用。在此，我们通过在120或140℃的二甘醇二甲醚中，使MBH与二丙基苯胺硼烷反应，开发了一种简便的大规模合成M[BH]（M = Na，K）的方法，产率高达88%。机理研究表明，在[BH]阴离子的形成过程中会形成中间体，如[BH]和[BH]，这与先前报道的情况类似。从二丙基苯胺硼烷加合物形成BH是最重要的。所开发的方法避免使用有毒材料，产率高，易于放大，原料容易获得。此外，起始原料二丙基苯胺可以至少重复使用三次，产率相似，这是促进工业合成的一种经济方式。据信，该方法将支持Na[BH]和K[BH]作为全固态电池的固体电解质的进一步应用。
