α-P_2W_(15)O_(56)^(12-)贵金属Ru取代化合物的合成及表征

Stuides on Synthesis and Characterization of Noble-metal(Ru)-Substituted Polyoxometalates

以较稳定的缺位多酸α Na12 P2 W15O56与贵金属Ru为原料 ,合成得到了化合物TBA12 Ru4 (Ⅲ ) (P2 W15O56) 2 ·8CH2 Cl2 及TBA7.5H0 .5Ru4 (Ⅳ ) (P2 W15O56) 2 ·2 4.5CH2 Cl2 .经元素分析、红外光谱、紫外光谱、循环伏安和3 1P核磁共振等的表征 ,证明产物为两聚夹心结构 ,其中母体多酸α P2 W15O5612 -的结构得到保持 。

TBA 12 Ru(Ⅲ) 4(P 2W 15 O 56 ) 2·8CH 2Cl 2 and TBA 7.5 H 0.5 Ru(Ⅳ) 4(P 2W 15 O 56 ) 2·24.5CH 2Cl 2 were synthesized by using a rather stable lacunary polyoxometalate α Na 12 P 2W 15 O 56 and the noble metal ruthenium. The measurements of Elemental Analyses, IR, UV Vis, CV and 31 P NMR showed that the products are Sandwich type polyoxometalates. The maintenance of the α Dawson structure was confirmed. The valence of the ruthenium was the same as in the precursor.