高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (6): 883.

• 研究论文 • 上一篇    下一篇

[(CH2OH)3CNH2]2H4SiW12O40·10H2O的合成、性质及晶体结构

毕立华, 辛明红, 王恩波, 黄如丹   

  1. 东北师范大学化学学院, 长春 130024
  • 收稿日期:1999-11-03 出版日期:2001-06-24 发布日期:2001-06-24
  • 通讯作者: 王恩波(1938年出生),男,教授,博士生导师,从事多酸化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29771006);吉林省科委应用基础研究基金(批准号:990553)资助

Synthesis, Properties and Crystal Structure of [(CH2OH)3CNH<sub>2]2H4SiW12O40·10H2O

BI Li-Hua, XIN Ming-Hong, WANG En-Bo, HUANG Ru-Dan   

  1. College of Chemistry, Northeast Normal University, Changchun 130024, China
  • Received:1999-11-03 Online:2001-06-24 Published:2001-06-24

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摘要： 合成了一种新的有机-无机盐[(CH2OH)3CNH2]2H4SiW12O40·10H2O,用元素分析、红外光谱、循环伏安和电子光谱进行了表征.测定了单晶的晶体结构,该晶体属三斜晶系,P1空间群,晶胞参数为a=1.2348(3)nm,b=1.3085(3)nm,c=1.8404(4)nm,α=73.88(3)°,β=74.55(3)°,γ=87.40(3)°;Z=2;R=0.0871.化合物的光色性研究表明从有机分子到杂多阴离子之间发生了电荷转移;电化学性质表明,化合物在2.0mol/LH2SO4溶液中的氧化还原峰电流与扫速成线性关系,为表面控制过程.

关键词: 有机-无机盐, 钨硅杂多阴离子, 晶体结构, 光色性

Abstract: Anovel organic-inorganic salt, [(CH2OH)3CNH2]2H4SiW12 O40 ·10H2O, was synthesized and characterized by means of elemental analyses, IRspectrum, cyclic voltammogram and electronic spectrum. The crystal structure of [(CH2OH)3CNH2]2H4SiW12 O40 ·10H2Owas determined belonging to triclinic with space group P1, a=1.2348 (3)nm, b=1.3085 (3)nm, c=1.8404 (4)nm; α=73.88(3)°, β=74.55(3)°, γ=87.40(3)°, Z=2, R=0.0871. Photochromism studies on [(CH2OH)3CNH2]2· H4SiW12 O40 ·10H2Oshow that the electron transfer takes place from the organic cation to the heteropolyanion. The electrochemical behavior of compound(Ⅰ) shows that the redox peak currents are proportional to the scan rate in H2SO4 solution of 2.0 mol/Lwhich indicates the electrode reaction are surface controlled processes.

Key words: Organic inorganic salt, Silicotungstate, Crystal structure, Photochromism

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