Two porous-layered borates built by B7O13(OH) clusters and AlO4/GaO4 tetrahedra
Two porous-layered borates built by B7O13(OH) clusters and AlO4/GaO4 tetrahedra
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DOI：
10.1039/d2ce01336c
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发表时间：
2022-11-04
期刊：
影响因子：
3.1
通讯作者：
Yang, Guo-Yu
中科院分区：
文献类型：
--
作者：
Dong, Ya-Zhuo;Chen, Chong-An;Yang, Guo-Yu
在溶剂热条件下合成了两种三维层状多孔硼酸盐：Na0.5K2.5[AlB 7 O 13（OH）]中心点H2O（1）和NaKCs[GaB 7 O 13（OH）]中心点1.5H（2）O（2）。化合物1在bar上的三斜空间群P（1）中结晶，而化合物2在单斜空间群P2（1）/n中结晶。化合物1和2含有类似的B7 O 13（OH）和AlO 4/GaO 4结构单元，B7 O 13（OH）和AlO 4/GaO 4结构单元严格交替排列，形成了沿着不同方向具有8-R和13-R通道的三维开放骨架层。1和2的通道的形状和取向由于它们的不同空间群而不同。有趣的是，在2中的不同位置发现了三种不同的碱金属离子（Na+，K+和Cs+）。紫外-可见漫反射光谱分析表明，这两种化合物显示出较宽的透明度范围，具有低于190 nm的短波吸收边。
Two three-dimensional (3D) porous-layered borates, Na0.5K2.5[AlB7O13(OH)]center dot H2O (1) and NaKCs[GaB7O13(OH)center dot 1.5H(2)O (2), have been obtained under solvothermal conditions. Compound 1 crystallizes in the triclinic space group P(1) over bar, while 2 crystallizes in the monoclinic space group P2(1)/n. Compounds 1 and 2 contain similar units of B7O13(OH) and AlO4/GaO4; the strict alternations of B7O13(OH) clusters and AlO4/GaO4 resulted in 3D open-framework layers with 8-R and 13-R channels along different directions. The shapes and orientations of the channels of 1 and 2 are different due to their different space groups. It's interesting to note that three different alkali metal ions (Na+, K+, and Cs+) are found in different positions in 2. UV-vis diffuse reflectance analysis indicates that both compounds show a wide transparency range with a short-wavelength absorption edge below 190 nm.