Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (1): 20210711.doi: 10.7503/cjcu20210711

• Article • Previous Articles     Next Articles

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)

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

CLC Number: 

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