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报道了双(11钨锌酸根)合稀土(Ⅲ)酸钠(稀土=La,Pr,Nd,Tb,Er)的合成及红外、拉曼和漫反射紫外可见等谱学方法的研究工作。振动光谱研究表明,11钨锌酸根配体为不饱和αKeggin结构;电荷及电荷分布是影响WOd振动的主要因素;配合物中负电荷被比较均匀地分布于整个负离子。与ZnW12O406-相比,稀土配合物中WObW键角减小,WOcW键角增大,ZnW11O3910-配体发生变形。电子光谱研究表明标题配合物中不存在对称中心,其中稀土离子的配位数为8,这与稀土离子的四方反棱柱型配位几何是一致的。
The synthesis of sodium (rare earth = La, Pr, Nd, Tb, Er) with bis (11-wolframido) rare earth (Ⅲ) and the UV- Vibrational spectroscopy studies show that the 11-wolframide ligands are unsaturated αKeggin structure; charge and charge distribution are the main factors affecting the vibration of WOd; the negative charge in the complex is more evenly distributed throughout the negative ions. Compared with ZnW12O406-, the WObW bond angle in the rare earth complex decreases, the WOcW bond angle increases, and the ZnW11O3910-ligand deforms. Electron spectroscopy studies show that there is no symmetry center in the title complex, in which the coordination number of the rare earth ions is 8, which is consistent with the tetragonal anti-prismatic coordination geometry of rare earth ions.