【摘要】 制备了镧、铈、镨,钐的钼钒磷杂多酸盐,对其进行了红外光谱、紫外光谱,X-粉末衍射及质子核磁共振分析,测定了磁化率和热稳定性。这些盐是具有Keggin结构的阴离子,其分子通式为LnH[PMo₁1VO₄0]·xH₂O。更多还原

【Abstract】 The saks of the molybdovanadophosphoric hetcropolyacids with lanthanide （La, Cc, Pr and Sm） were prepared by double decomposition method. Their IR,UV absorption spectra, X-ray powder diffraction, ¹H NMR spectra, magnetic susceptibilities and thermal stabilities were invcstigated. The results showed that these salts are acid ones and consist of Keggin structure heteropoly anions with a large volume and lanthanide cations with three positive charges. A general formula of salts is LnH[PMo₁1VO₄0]·xH₂O （Ln=La, Ce, Pr, Sm）. The methods of synthesis of these salts were also discussed.更多还原