摘要
由Ｈ４ＧｅＭｏ１２－ｎＷｎＯ４０·ｍ Ｈ２Ｏ（ｎ＝ ０， ９， １１， １２）和Ｎ－甲基吡咯烷酮合成，随后在ＣＨ３ＣＮ 和水中结晶，制成了一系列分子组成为［ＮＭＰＨ］４ＧｅＭｏ１２－ｎＷｎＯ４０·ＣＨ３ＣＮ的电荷转移化合物。并用元素分析、红外光谱、电子光谱进行了表征。结果表明在该系列化合物中， Ｎ－甲基吡咯烷酮通过Ｎ原子与酸中的质子结合成阳离子而与阴离子成盐；固体中阴离子和阳离子之间存在强的相互作用；化合物在光照下发生分子内电荷转移， 导致阳离子的氧化和阴离子的还原；ＥＳＲ结果表明阴离子还原反应处于单电子阶段； 非线性光学性质研究表明， 随着化合物分子内钨取代数的增多， 化合物倍频效应增强。
A series charge transfer salts, [NMPH] 4GeMo 12 n W nO 40 ·CH 3CN ( n =0, 9, 11, 12), were synthesized from H 4GeMo 12 n W nO 40 · m H 2O and N methylprolinedone, and they were crystallized out from CH 3CN and water solution, and characterized by elemental analysis, IR spectra and UV spectra. The results suggest that the organic molecules combine a H + first and then form the charge transfer salts. There is a strong interaction between anion and the organic cation in solid state. The charge transfer in the compound will take place under irradiation of light and the anion will be reduced in one electron step. The heteropoly blue were formed after the charge transfer salts were irradiated under light. The results of the second order and third nonlinear optical properties indicate that both of them increased as the increasing of the tungsten in the molecules. $$$$
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1999年第6期773-778,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金
河南省自然科学基金
河南省教委自然科学基金
关键词
电荷转移盐
甲基吡咯烷酮
三阶
非线性光学材料
heteropoly acid
N- methylpyrolinedone
second-order nonlinear optical property
