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利用水热法合成了由四核FeⅡ簇和三缺位Keggin型磷钨酸盐共同构筑而成的夹心型多金属氧酸盐(H2dien)4H2[Fe4(H2O)2(α-B-PW9O34)2]·8H2O(1)(dien=二乙烯三胺);采用红外光谱、X-射线单晶衍射定性表征了产物的结构,利用元素分析测定了其组成.结果表明,化合物1属于三斜晶系,P-1空间群.其多阴离子[Fe4(H2O)2(α-B-PW9O34)2]10-由两个[α-B-PW9O34]9-单元通过Fe4O14(H2O)2簇连接而成;Fe2+离子采用六配位的八面体几何构型.同时,质子化的H2dien2+充当抗衡阳离子,经氢键与杂多阴离子[Fe4(H2O)2(α-BPW9O34)2]10-相互作用形成三维结构.
A sandwich type polyoxometalate (H2dien) 4H2 [Fe4 (H2O) 2 (α-B-PW9O34)) synthesized by the tetranuclear FeⅡ cluster and the triple vacancy Keggin type phosphotungstate was synthesized by hydrothermal method. 2] · 8H2O (1) (dien = diethylenetriamine) .The structure of the product was characterized qualitatively by IR and X-ray single crystal diffraction.The composition of the product was determined by elemental analysis.The results showed that compound 1 belongs to triclinic The polyanion [Fe4 (H2O) 2 (α-B-PW9O34) 2] 10- is connected by two [α-B-PW9O34] 9- units through Fe4O14 The Fe2 + ions adopt hexahedral octahedron geometry, and the protonated H2dien2 + acts as a counter-cation and forms a 10- interaction with the heteropolyanion [Fe4 (H2O) 2 (α-BPW9O34) 2] Three-dimensional structure.