Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (03): 285-288.doi: 10.1016/S1872-1508(07)60020-5

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Synthesis, Structure and Thermal Properties of [HN(C2H5)3][B5O6(OH)4]

YANG Zi-Liang;YANG Si-Hai;LI Guo-Bao;LIN Jian-Hua   

  1. Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2006-08-21 Revised:2006-11-16 Published:2007-03-07
  • Contact: LI Guo-Bao E-mail:liguobao@pku.edu.cn

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Abstract: Triethylamine pentaborate, [HN(C2H5)3][B5O6(OH)4] (1), was hydrothermally synthesized and characterized by single crystal X-ray diffraction, FTIR, elemental analysis, and thermogravimetric analysis. Compound 1 crystallized in the monoclinic system, space group P21/c with a=1.0036(2) nm, b=1.1353(2) nm, c=1.4843(3) nm, and β=106.54(3)°. It consisted of isolated borate polyanion [B5O6(OH)4]- and triethylamine cation [HN(C2H5)3]+. The anionic units, [B5O6(OH)4]-, were linked by hydrogen bonds to form a 3D supramolecular network containing large channels, in which the templating [HN(C2H5)3]+ cations were located.

Key words: Crystal structure, Triethylamine pentaborate, Hydrothermal reaction