摘要
利用水热法合成了三种钒氧簇合物:[{Ni(phen)2}2V4O12]H2O(Ⅰ),[N(CH2CH2)3NH]Na(H2O)6{K4(H2O)4[V10O28]}(H2O)4(Ⅱ)和[(CH3)4N]6[V15O36Cl](Ⅲ)。通过用FTIR,UV-Vis DRS和荧光光谱研究了它们的结构和性能的关系。FTIR研究表明,化合物的相关基团的特征振动吸收峰和其结构相关。化合物Ⅰ的固体紫外漫反射光谱在200,230,260和350 nm出现四个宽峰,分别对应Ot→V,Oμ→Ni,Oμ→V荷移和phen的π-π*跃迁。文章还对这三个钒氧簇合物的荧光光谱进行了研究。最后,应用Gaussian98的量子化学计算,说明化合物Ⅰ的结构特点。
Three polyoxovanadium clusters, E{Ni（phen）2 }2V4O12]· H2O Ⅰ, CN（CH2CH2）3NH] Na（H2O）6 {K, （H2O）4[V10 O28]}（H2O）4 Ⅱ and [（CH3）4N]6 [V15 O36 Cl] Ⅲ, have been synthesized under hydrothermal condition. The relationship between their properties and structures were studied by using FTIR, UV-Vis DRS and flurescence. The FTIR showed that the vibrational frequencies of the group are related to the structure of the materials. In UV-Vis DRS spectra of compound I, there are four characteristic wide peaks at 200, 230, 260 and 350 nm corresponding to Ot→V, Ou→Ni, Ou→V charge transfer and phen＇s π-π^＊ , respectively. The fluorescence spectra of clusters have been studies. Finally, the quantum chemistry calculation was performed by Gaussian 98 program to explain the structure characteristic of compound Ⅰ.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2006年第2期282-286,共5页
Spectroscopy and Spectral Analysis
基金
福建省自然科学基金
福建省高等学校科技项目基金
结构化学国家重点实验室项目
福州大学科技发展基金项目资助
关键词
金属氧簇合物
钒酸盐
光谱分析
晶体结构
Polyoxometallate
Polyoxovanadium
Spectral analysis
Crystal structure
