锰、钴、镍钨硅杂多酸盐的合成及性质研究  

Synthesis and Properties of Triheteropoly Compounds Containing Mn,Co,Ni

作　　者：王俊[1] 吴志芸[1] 张恒彬[1] 赵仲清[1] 王贤仁[2] 魏诠 

机构地区：[1]吉林大学化学系,长春130023 [2]吉林大学电子科学系 [3]吉林大学分析测试中心

出　　处：《高等学校化学学报》1992年第11期1428-1431,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：对3种过渡金属钨硅杂多酸钾盐的组成及性质进行了研究,与12-钨硅酸钾比较表明,在Keggin阴离子骨架中,以空位或过渡金属Mn^(2+)、Co^(2+)、Ni^(2+)取代一个W^(6+)后,其W—O、Si—O键振动吸收频率、组成元素内层电子结合能、W—O多面体的可还原性、晶形、晶格大小及热稳定性都出现了明显变化,这些变化与过渡元素的性质相关联.Five heteropoly silicotungstic compunds were synthesized.Their properties were characterized.The results indicate that the IR absorption of W-Oc-W and Si-O bonds,the electronic bonding energy of constituent elements,the reducibility of W-O polyhedra,the lattice size and crystal shape of heteropoly compound and the thermal stability of Keggin unit etc.are changed obviously,when W atom in Keggin anion was substituted for a alcunary or a lower valence transition metal ion such as Mn2+,Co2+ and Ni2+.In the paper,the correlation of the properties of the transition metals with the changes mentioned above was discussed.

关 键 词：钨 硅 杂多化合物 过渡元素 

分 类 号：O614.613[理学—无机化学]