Chen Chong-An, Yang Guo-Yu
MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
Precis Chem. 2024 May 19;2(6):256-262. doi: 10.1021/prechem.4c00010. eCollection 2024 Jun 24.
Three pentaborates were made by precise structural regulations under hydrothermal conditions, namely, KCs[BO(OH)]·0.5CO (), KNaCs[BO(OH)]·2OH (), and NaBa[BO(OH)] (). Compound features the typical 2D layers constructed from the four-connected BO(OH) clusters. By adjustment of the reactants and pH values of the systems to remove interlayered CO groups, the centric layers in were transformed to the chiral layers of . By further adjusting cationic templates based on host-guest charge matching, the BO(OH) cluster unit was transformed to BO(OH), which built the chiral porous layers of . The chiral compounds and exhibit moderate second harmonic generation (SHG) responses of 1.1 and 1.7 times that of KDP (KHPO). The structural regulations actualize the evolutions on both structural symmetries and dimensions.
通过水热条件下精确的结构调控制备了三种硼酸盐，即KCs[BO(OH)]·0.5CO （）、KNaCs[BO(OH)]·2OH （）和NaBa[BO(OH)] （）。化合物 具有由四连接的BO(OH)簇构建的典型二维层。通过调节体系中的反应物和pH值以去除层间的CO 基团， 中的中心层转变为 的手性层。基于主客体电荷匹配进一步调节阳离子模板，BO(OH)簇单元转变为BO(OH)，构建了 的手性多孔层。手性化合物 和 表现出中等的二次谐波产生（SHG）响应，分别是KDP（KHPO）的1.1倍和1.7倍。结构调控实现了结构对称性和维度上的演变。
