物理化学学报 >> 2007, Vol. 23 >> Issue (03): 285-288.doi: 10.1016/S1872-1508(07)60020-5

研究论文    下一篇

[HN(C2H5)3][B5O6(OH)4]的合成、结构和热稳定性

杨子良;杨四海;李国宝;林建华   

  1. 北京大学化学与分子工程学院, 北京分子科学国家实验室(筹), 稀土材料化学和应用国家重点实验室, 北京 100871
  • 收稿日期:2006-08-21 修回日期:2006-11-16 发布日期:2007-03-07
  • 通讯作者: 李国宝 E-mail:liguobao@pku.edu.cn

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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摘要： 利用水热法合成了五硼酸三乙胺[HN(C2H5)3][B5O6(OH)4], 并利用单晶X射线衍射技术解析了其结构, 同时利用傅立叶红外分析、元素分析及热分析技术加以佐证. 该化合物属于单斜晶系, 其空间群为P21/c, 相应的晶胞参数为a=1.0036(2) nm, b=1.1353(2) nm, c=1.4843(3) nm和β=106.54(3)°. 它由孤立的五硼酸阴离子[B5O6(OH)4]-和三乙胺阳离子[HN(C2H5)3]+构成. 五硼酸阴离子[B5O6(OH)4]-通过氢键构成三维网状结构, [HN(C2H5)3]+位于其中的孔道中.

关键词: 晶体结构, 五硼酸三乙胺, 水热反应

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