Magnetic relaxation in a Co(<scp>ii</scp>) chain complex: synthesis, structure, and DFT computational coupling constant
作者:Wen-Hao Wu、Ya-Qun Wang、Hong-Li Mi、Qing-Xuan Xue、Feng Shao、Fei Shen、Feng-Lei Yang
DOI:10.1039/d0ce01662d
日期:——
two types of Co(II) ions, octahedral and tetrahedral, bridged by three types of linkers (μ-Cl, μ-(N–N), μ-O), extend into 1D chains. Additionally, the interchain connections are weak, facilitating the occurrence of single-chain magnetic behavior. Magnetically, considerable frequency dependence of slow magnetic relaxation is observed below 5 K and the compound behaves like a single-chain magnet. Both
一种新颖的高自旋的Co(II)络合物,命名为[CO II 2(μ-L 1)(μ-L 2)(μ-Cl)的CL] Ñ(1)中,通过Co的反应来实现(II)具有两种吡唑酸酯配体的盐(HL 1 = 2-(5-甲基-1 H-吡唑-3-基)吡啶; HL 2 = 2-(5-甲基-4 H -1,2,4-三唑- 3-yl)phenol)的溶剂热法。从结构上讲,两种类型的Co(II)八面体和四面体离子通过三种类型的连接体(μ-Cl,μ-(N–N),μ-O)桥接,延伸到一维链中。另外,链间连接较弱,有利于单链磁行为的发生。磁性方面,在5 K以下观察到慢速磁弛豫的明显频率依赖性,该化合物的行为类似于单链磁体。无论是从耦合常数的模拟χ中号Ť与T的关系曲线和DFT运算显示,在共同的μ-O接头2 ö 2系统发送铁磁耦合。