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以Na2WO4·2H2O,Na2MoO4·2H2O,Na2HAsO4·7H2O和2,2’-bipyridine为原料,在水热条件下制得了含一维阳离子的聚金属氧簇化合物:[{M(2,2’-bipy)}5O14]4[2,2’-H2bipy]2(As2W18O62)2·8H2O(M=Mo/W;2,2’-bipy=2,2’-bipyridyl),并用元素分析,IR,TG和单晶X-ray衍射等手段进行了表征.标题化合物属于单斜晶系,C2/c空间群,a=4.1721(5)nm,b=2.4629(5)nm,c=1.7541(5)nm,β=91.119(3)°,V=18.021(5)nm3,Z=2,R1=0.0629,wR2=0.1605[I>2σ(I)].标题化合物的阳离子链由五元金属氧簇构筑块[{M(2,2’-bipy)}5O14]2+通过氧原子桥联而成,构筑块[{M(2,2’-bipy)}5O14]2+中的五个金属原子呈畸变的“A”字型排布,阳离子展现出新颖的一维锯齿链状结构.
The one-dimensional polyoxometalate polyoxometalate compounds were prepared under hydrothermal conditions using Na2WO4 · 2H2O, Na2MoO4 · 2H2O, Na2HAsO4 · 7H2O and 2,2’-bipyridine as raw materials: [{M )} 5O14] 4 [2,2’-H2bipy] 2 (As2W18O62) 2.8H2O (M = Mo / W; 2,2’-bipy = 2,2’-bipyridyl) Single crystal X-ray diffraction, etc. The title compound belongs to the monoclinic space group C2 = c, a = 4.1721 (5) nm, b = 2.4629 (5) nm and c = 1.7541 The cationic chain of the title compound consists of a five-membered metal oxygen cluster building block [[beta] = 91.119 (3) °, V = 18.021 (5) nm3, Z = 2, R1 = 0.0629, wR2 = 0.1605 [I> 2σ {M (2,2’-bipy)} 5O14] 2+ is bridged by oxygen atoms and the five metal atoms in the building block [{M (2,2’-bipy)} 5O14] 2+ are distorted “A ” font arrangement, the cation shows a novel one-dimensional serrated chain structure.