基于1,2-丙二胺配体构筑CuⅡ-LaⅢ异金属修饰型磷钨酸化合物的合成与表征

摘要

在水热条件下,成功合成了一例新的Cu-La异金属修饰的有机-无机杂化型多金属磷钨酸簇合物[Cu(dap)2]3.5[Cu(dap)2(H2O)]2[La(α-PW11O39)2]·6H2O(1)(dap=1,2-丙二胺),并通过元素分析、红外光谱、热分析和X射线单晶衍射对化合物进行了表征和研究.结构分析表明在化合物1中,单稀土取代的二聚[La(α-PW11O39)2]11-单元之间通过[Cu(dap)2]2+阳离子连接,形成一维Z字型链状结构.值得注意的是,化合物1是首例一维含1,2-丙二胺有机配体Cu-La异金属修饰的磷钨酸簇合物.%A new organic-inorganic hybrid phosphotungstate-based copper-lanthanide heterometallic derivative [Cu(dap)2]3.5[Cu(dap)2(H2O)]2[La(α-PW11O39)2]·6H2O (1) (dap = 1,2-diamin-opropane) has been prepared under hydrothermal conditions and characterized by elemental analysis, infrared spectroscopy, thermogravimetric ( TG) analysis and X-ray single-crystal diffraction. Structural analysis indicates that 1 exhibits a special one-dimensional zigzag chain structure constructed from mono-lanthanide-substituted 1 : 2-type [La(α-PW11O39)2]11- moieties and [Cu(dap)2]2+ linkers. Notably, compound 1 represents the first 1D dap-containing La-Cu heterometallic phosphotungstate.