高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (1): 20210711.doi: 10.7503/cjcu20210711

• 研究论文 • 上一篇    下一篇

两种基于B5On(n=11, 12)簇构筑的具有深紫外吸收的硼酸盐

陈崇安, 杨国昱()   

  1. 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
  • 收稿日期:2021-10-09 出版日期:2022-01-10 发布日期:2021-11-11
  • 通讯作者: 杨国昱 E-mail:ygy@bit.edu.cn
  • 基金资助:
    国家自然科学基金(21831001);国家杰出青年科学基金(20725101)

Two B5Onn=11, 12) Cluster-based Borates with Deep UV Cutoff Edge

CHEN Chongan, YANG Guoyu()   

  1. Key Laboratory of Cluster Science,Ministry of Education,School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102488,China
  • Received:2021-10-09 Online:2022-01-10 Published:2021-11-11
  • Contact: YANG Guoyu E-mail:ygy@bit.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21831001);the National Science Found for Distinguished Young Scholars of China(20725101)

摘要:

以碱金属和碱土金属为模板, 在溶剂热条件下合成了两种具有深紫外吸收特性的硼酸盐Na2Ba· [B5O8(OH)]2·2H2O(1)和KSr[B5O8(OH)2](2), 并利用单晶X射线衍射(SCXRD)、 粉末X射线衍射(PXRD)、 傅里叶变换红外(FTIR)光谱、 紫外-可见吸收光谱(UV-Vis)和热重分析(TG)等手段对化合物的结构和性能进行了研究. 结果表明, 化合物1可归属于单斜晶系P2/c空间群, 结构中四连接的B5O10(OH)簇单元通过共氧连接形成含有两种9-元环窗口的二维层; 化合物2结晶于单斜晶系C2/c空间群, 结构中四连接的B5O10(OH)2簇单元则通过共氧交替连接构筑了罕见的含有8-/12-元环孔道的二维褶皱层. 两种基于B5On(n=11, 12)簇单元构筑的化合物均具有低于200 nm的深紫外吸收边, 在紫外/深紫外区具有潜在的应用价值.

关键词: 硼氧团簇, 溶剂热合成, 层状结构, 短边吸收

Abstract:

Two new borates Na2Ba[B5O8(OH)]2·2H2O(1) and KSr[B5O8(OH)2](2), with deep UV cutoff edges, were solvothermally made by using mixed alkali and alkaline-earth metal templates. They were further characterized by single-crystal XRD, powder XRD, IR spectra, UV-Vis absorption spectra and thermogravimetric analysis. Compound 1 crystalizes in the monoclinic space group P2/c. 4-connected B5O10(OH) cluster build 2D monolayer with two kinds of 9-MR windows via corner-sharing. Compound 2 crystalizes in the monoclinic space group C2/c. 4-connected B5O10(OH)2 cluster construct 2D fluctuant layer with different 8- and 12-MR unclosed channels along two different directions. Both 1 and 2 exhibit the cutoff edge below 200 nm, indicating their potential applications in UV and deep UV regions.

Key words: Oxoboron cluster, Solvothermal syntheses, Layered structure, Short cutoff edge

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