A porous⁃layered aluminoborate built by mixed oxoboron clusters and AlO_(4)tetrahedra  

一个基于混合硼氧簇及AlO_(4)四面体构建的孔层结构硼酸铝

作　　者：CHEN Juan YANG Guoyu 陈娟;杨国昱(北京理工大学化学与化工学院,原子分子簇科学教育部重点实验室,北京102488)

机构地区：[1]MOE Key Laboratory of Cluster Science,School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102488,China

出　　处：《无机化学学报》2025年第1期193-200,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21831001,21971011)资助。

摘　　要：An aluminoborate,Na_(2.5)Rb[Al{B_(5)O_(10)}{B_(3)O_(5)}]·0.5NO_(3)·H_(2)O(1),was synthesized under hydrothermal condition,which was built by mixed oxoboron clusters and AlO_(4)tetrahedra.In the structure,the[B_(5)O_(10)]^(5-)and[B_(3)O_(7)]^(5-)clusters are alternately connected to form 1D[B_(8)O_(15)]_(n)^(6n-)chains,which are further linked by AlO_(4)units to form a 2D monolayer with 7‑membered ring and 10‑membered ring windows.Two adjacent monolayers with opposite orientations further form a porous‑layered structure with six channels through B—O—Al bonds.Compound 1 was characterized by single crystal X‑ray diffraction,powder X‑ray diffraction(PXRD),IR spectroscopy,UV‑Vis diffuse reflection spectroscopy,and thermogravimetric analysis(TGA),respectively.UV‑Vis diffuse reflectance analysis indicates that compound 1 shows a wide transparency range with a short cutoff edge of 201 nm,suggesting it may have potential application in UV regions.CCDC:2383923.以碱金属阳离子为结构导向剂,在溶剂热条件下合成了一个基于混合硼氧团簇单元及AlO_(4)四面体构建的硼酸铝:Na_(2.5)Rb[Al{B_(5)O_(10)}{B_(3)O_(5)}]·0.5NO_(3)·H_(2)O(1)。结构中,[B_(5)O_(10)]^(5-)和[B_(3)O_(7)]^(5-)两种单元交替连接形成一维[B_(8)O_(15)]_(n)^(6n-)链,链与链之间通过AlO_(4)四面体连接形成具有七元环和十元环窗口的二维层,相邻取向相反的2个单层进一步通过B-O-Al键构成具有6种类型孔道的孔层结构。通过单晶X射线衍射、粉末X射线衍射、红外光谱、紫外可见漫反射光谱以及热重分析对该化合物进行了结构表征和性能研究。紫外可见漫反射光谱分析表明,化合物1的紫外吸收截止边为201 nm。

关 键 词：hydrothermal synthesis aluminoborate mixed oxoboron cluster porous layer 

分 类 号：O611.4[理学—无机化学]