具有β_2-Keggin结构主族元素钨砷杂多配合物的合成与性质  

Synthesis and properties of substituted β_2-Keggin structure heteropolytungstoarsenate

作　　者：张秀华[1] 张海华[2] 周百斌[2] 徐学勤[2] 

机构地区：[1]大庆师范学院化学系,黑龙江大庆163712 [2]哈尔滨师范大学化学系,黑龙江哈尔滨150080

出　　处：《分子科学学报》2007年第4期237-242,共6页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(20371014;20671026);黑龙江省自然科学基金资助项目(ZTB2005-33);黑龙江省普通高校骨干教师创新基金资助项目(1055G016)

摘　　要：合成了4种主族元素取代的钨砷杂多配合物，通过ICP和TG曲线确定其通式为：K11.12[M（AsW11O39）2]·xH2O和K3．4EAsZ（OH2）W11O39]·xH2O（M=Pb^2＋，Bi^3＋；Z=Sn^4＋，Sb^3＋）．采用IR，UV，XRD，XPS，^183W NMR等方法证明其结构为β2-Keggin结构，用极谱和循环伏安法研究了配合物的氧化还原性和热稳定性，结果表明：所合成的配合物只有一步双电子还原过程，电位较高，表现出强氧化性；配合物将在550℃～600℃范围内分解．The β2-isomer Keggin structure heteropolytungstoarsenate complexes containing main group elements have been prepared and characterized by ICP,UV, IR,XPS,XRD and ^183W NMR. The redox behaviors of these complexes are investigated by cyclic voltammetry. The results indicate that redox processes are one-step and irreversible,showing redox abilities of these complexes is very strong. The thermostabilities of these complexes are also discussed. Complexes were decomposed in the range of 550℃-600 ℃.

关 键 词：钨砷杂多配合物 主族元素 β2—Keggin结构 

分 类 号：O612[理学—无机化学]