一种镍取代型有机-无机杂化三维超分子多酸:合成、结构与表征

摘要

在水热条件下,成功合成了一例新的过渡金属镍修饰的有机-无机杂化型三维超分子多酸化合物[ Ni (en)2(H2O)2][Ni(en)3]2[Ni(en)2(H2O)]2[Ni4(α-PW9O34)2(H2O)2]·14H2O (1) (en ＝ 乙二胺),并通过元素分析、红外光谱、热分析和X射线单晶及粉末衍射对化合物进行了表征和研究. 从超分子化学的角度来看,化合物1中的夹心型簇阴离子之间通过广泛的氢键作用,进而形成三维超分子网络结构.%A new 3D nickel-substituted organic-inorganic hybrid supramolecular polyoxometalate, [Ni(en)2(H2O)2][Ni(en)3]2[Ni(en)2(H2O)]2[Ni4(α-PW9O34)2(H2O)2]·14H2O(1) (en＝C2H8N2), has been prepared under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy, XRD, thermogravimetric (TG) analysis and X-ray single-crystal diffraction.From the viewpoint of supramolecular chemistry, the sandwich-type polyoxoanions in 1 are further extended to 3-D frameworks via extensive hydrogen-bonding interactions.