Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (6): 1161-1167.doi: 10.1007/s40242-020-0152-9

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Assembly of Three Scandium-containing Heteropolytungstates Based on a Building-block Synthetic Strategy

ZHANG Wenqi1, LIN Zhengguo1, CHI Yingnan1, HONG Jie2, YAN Li2, HU Changwen1   

  1. 1. Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China;
    2. Analysis and Testing Center, Beijing Institute of Technology, Beijing 100081, P. R. China
  • Received:2020-05-14 Revised:2020-05-21 Online:2020-12-01 Published:2020-12-03
  • Contact: LIN Zhengguo, HU Changwen E-mail:linzhengguo11@163.com;cwhu@bit.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21871026, 21671019, 21701010).

Abstract: Three novel scandium-containing heteropolytungstates[Sc3(H2O)3NO3(PW9O34)2]10-(1a),[Sc8(H2O)2(GeW9O34)2(GeW6O26)2]12-(2a) and[Sc11(W6O10)2(OH)2(H2O)16(BiW9O33)6]27-(3a) were synthesized by reactions of ScIII ions with trilacunary Keggin precursors,[A-α-XW9O34]n-(X=P, Ge, n=9, 10) or[B-α-BiW9O33]9-, in NaOAc/HOAc buffer solution under conventional synthetic condition, respectively. All the three compounds were characterized by means of single-crystal X-ray diffraction(XRD), Fourier transform-infrared(FTIR) spectroscopy ultraviolet-visible(UV-Vis) spectroscopy, elemental analysis, and thermogravimetric analysis. The aqueous solution stability of the sandwich polyanion[Sc3(H2O)3NO3(PW9O34)2]10- was also verified by electrospray ionization mass spectrometry(ESI-MS) due to its good solubility in water.

Key words: Scandium, Heteropolytungstate, Building-block, Crystal structure