【摘要】 系统地考察了H3PMo12 -nWnO4 0 ·xH2 O系列酸在不同溶剂中的电子光谱行为 ,结果表明 ,Mo Ob ,c Mo键在稀水溶液中断裂 ,而在乙醇溶液中能够稳定存在 ;W Ob ,c W键在极稀的水溶液中也能够稳定存在 ;在有机溶剂中所有酸的特征吸收峰均发生红移。电化学性质的研究表明 ,随着分子中钨原子取代数的增多 ,酸的氧化性降低 ,最高还原峰电位和分子中钨原子取代数之间存在一近似线性关系。更多还原

【Abstract】 The electronic spectra of a series of heteropoly acid, H 3PMo 12-n W n O 40 ·xH 2O,was studied in different solvents.The results indicated that the Mo O b,c Mo bond was cut in dilute aqueous solution,but it was stable in ethanol solution.The W O b,c W bond was still stable in very dilute aqueous solution.The characteristic peaks of electronic spectra had a red shift in organic solvents.The studies of electrochemical properties indicated that the oxidation susceptibility of the acids decreased with the increase of the tungsten atoms in the molecules.更多还原