Dawson结构钨钛砷三元杂多酸配合物的合成与表征

SYNTHESIS AND CHARCTERIZATION OF TUNGSTATIANDARSENATE HETEROPOLY COMPLEXE WITH DAWSON STRUCTURE

首次合成了具有Dawson结构的钨钛砷三元混配杂多配合物。用元素分析和热重分析确定了杂多配合物的组成为K_8[As_2W_(17)TiO_(62)]·10H_2O。采用X—射线衍射、红外光谱、紫外光谱、循环伏安、差热等方法系统地研究了它的结构和光谱性质、氧化还原性和热稳定性,结果表明,Dawson结构钨钛砷杂多配合物较K_(10)As_2W_(17)O_(61)·20H_2O杂多配合物有强的氧化性和热稳定性性。

The complexe K8[As2W17TiO62] . 10H2O with Dawson stucture was firstly prepared and characterized by elemental anlysis.TG-DTA, IR,UV,X -ray powder diffraction and cyclivoltammetry. The results show that the oxidiability and thermalstability of the title complexe is stronger than these of K10As2W17O62 . 20H2O.