摘要
以吡啶（Ｐｙ）、Ｎ，Ｎ二甲基苯胺（ＤＭＡ）和１２钨锗酸为原料，用化学法合成了两个新的１２钨锗酸电荷转移配合物．用元素分析和热重分析确定它们的分子式为（ＨＰｙ）３ＨＧｅＷ１２Ｏ４０·Ｐｙ·２ＤＭＦ和（ＨＤＭＡ）３ＨＧｅＷ１２Ｏ４０·ＤＭＡ·２ＤＭＦ．红外和紫外光谱表明有机电子给体与杂多阴离子间有强烈的相互作用，生成了电荷转移配合物．紫外可见光谱测试发现在６４５ｎｍ附近有一个新的吸收峰，对应于Ｗ（Ⅴ）→Ｗ（Ⅵ）的ＩＶＣＴ跃迁，结合极谱循环伏安测试，发现合成产物在光的作用下发生可逆的光还原反应．
Two new organopolyoxometalate charge transfer complexes were synthesized with chemical method from dodecatungstogermanic acid, pyridine, and N, Ndimethylaniline The formulas have been determined as (HP y ) 3HGeW 12 O 40 ·Py·2DMF and (HDMA) 3HGeW 12 O 40 ·DMA·2DMF by C, H, N elemental analysis and TG analysis IR and UV spectra indicate that there are strong interactions between donors and polyanions A new peak around 645 nm has been found in UVvis spectra which belongs to IVCT of W(Ⅴ)→W(Ⅵ) Polargraphy and cyclic voltammetry methods indicate that the title compounds undergo reversible photoinduced reduction
出处
《湖北大学学报（自然科学版）》
CAS
1998年第3期260-263,共4页
Journal of Hubei University：Natural Science
基金
国家自然科学基金
关键词
钨锗酸
电荷转移配合物
合成
光致变色
光色性
Dodecatungstogermanic acid
Charge transfer complexes
Synthesis
Photochromism
