Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (1): 123-127.doi: 10.1007/s40242-021-1183-6

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A New Tubular Borate Built by[B14O24(OH) 6]12- Cluster Units

SUN Xiao-Shuang, QIN Dan, LI Xu-Yan, YANG Guo-Yu   

  1. Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
  • Received:2021-04-23 Revised:2021-05-16 Online:2022-02-01 Published:2021-06-09
  • Contact: YANG Guo-Yu E-mail:ygy@bit.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos.21571016, 21831001, 91122028) and the National Natural Science Foundation of China for Distinguished Young Scholars(No.20725101).

Abstract: Anew mixed alkali and alkaline-earth metal borate Na4Ca2[B14O22(OH)6]·2H2O(1) has been made under a mild solvothermal condition and characterized by single-crystal X-ray diffraction, infrared(IR) spectroscopy, UV-Vis diffuse reflectance spectroscopy, powder X-ray diffraction and thermogravimetric analysis, respectively. Compound 1 features a 1D tube based on[B14O24(OH)6]12-({B14}-1) oxo-boron clusters. Such a tube built by {B14}-1 units has been discovered for the first time in borate system. These tubes are arranged orderly to generate 2D layers and a further 3D supramolecular network through hydrogen bond interactions. UV-Vis diffuse reflectance spectrum reveals that compound 1 is a wide band-gap semiconductor and has potential application in UV region.

Key words: Alkali and alkaline-earth metal, Borate, Tube, Solvothermal synthesis, Cluster