用水热方法合成了一种新颖的以N-(亚磷酸甲基)亚胺基二乙酸(H4pmida)桥联的异核配合物CdVO(pmida)(4,4'-bpy)(H2O)2]·4H2O(1),并对其进行了红外光谱、紫外光谱、热重分析和磁性研究。在配合物中,[V2O2(pmida)2]^4- 单元利用配体的膦酸氧原子桥联镉离子而形成二维网状结构。在2-300K范围内测定配合物的变温磁化率,表明配合物中V^4+离子间存在弱的反铁磁相互作用。
A new heternuclear complex CdVO (pmida) (4,4'-bpy) (H2O)2]·4H2O, bridged by N-(phosphonomethyl) iminodiacetate (H4pmida), was synthesized by hydrothermal reactions and characterized by IR spectra, UV-vis spectra, thermogravimetric analysis and magnetic properties. In the complex, the centrosymmetric dimeric [V2O2(pmida)]4-unit connected to neighboring Cd^2+ through the phosphonate group, forming 2D network. Magnetic measurements in the range 2-300 K have shown weak antiferromagnetic interaction between the adjacent vanadium(Ⅳ) ions in complexes.