二维含镧链异核金属化合物的合成、结构和磁性研究(英文)

2D Heterometallic Complexes with Infinite Ln Chains:Synthesis,Crystal Structure and Magnetic Properties

水热法合成了3个层状异核金属化合物[Ln(idaH)M(ida)2]n·0.5nH2O,(H2ida=亚氨基二乙酸,Ln=Nd,M=Co(1);Ln=La,M=Co(2);Ln=La,M=Ni(3))。进行了晶体结构测定,红外光谱分析、能谱分析与磁性能分析。3个化合物除金属原子不同外具有相同的结构,其晶体都属于单斜晶系,C2/c空间群。单晶结构表明该结构含有由十配位的Ln通过羧基氧连接而成的链,六配位的3d金属(Co、Ni)交替地处在链的两边,形成了带状结构,带状链通过配体连成二维结构,通过氢键形成三维骨架。

Three 2D sandwich-like layer heterometallic complexes, formulated as [Ln（idaH）M（ida）2]n-0.5nH2O, （H2ida=iminodiacetic acid, Ln=Nd, M=Co（1）; Ln=La, M=Co（2）; Ln=La, M=Ni（3）） have been synthesized under hydrothermal reaction condition and characterized by X-ray diffraction single-crystal structure analysis, IR spectroscopy, elemental analysis, TGA analysis, XPS techniques and magnetic analysis. The Ln atoms are tencoordinated and linked up into chains by carboxylic oxygen atoms, which are engrafted by six-coordinated 3d transition metal atoms on both sides to give rise to belt-like chains. The belt-like chains are linked up into 2D network by ida ligands and further extended into 3D open-framework by strong hydrogen-bond interactions.CCDC： 694953, 1; 694954, 2; 694955, 3.