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1,4-二氮杂环配体有两个可以与金属配位的N原子,配位后可能呈现链状形式.当金属离子含未成对电子时,由于M_1—L—M_2链中超交换作用的存在,可能会产生反铁或铁磁性相互作用,即M_1与M_2中的未成对电子呈反平行或平行排列.这决定于电子构型和链的几何排列,可以用ESR和变温磁化率测定.我们制备了四个二氮杂环配体L、MQ、dMQ和dPQ,使之与CuX_2(X=Cl,Br)反应,对生成配合物的结构进行了讨论.
The 1,4-diazacyclic ligand has two N atoms that can coordinate to the metal, and may form a chain form after coordination. When the metal ion contains unpaired electrons, due to the super-exchange effect in the M_1-L-M_2 chain, May cause an antiferromagnetic or ferromagnetic interaction, ie, the antiparallel or parallel arrangement of unpaired electrons in M_1 and M_2, which depends on the electronic configuration and the geometric arrangement of the chains, can be determined by ESR and temperature-dependent susceptibility We have prepared four diazacyclic ligands L, MQ, dMQ and dPQ and reacted with CuX_2 (X = Cl, Br) to discuss the structure of the resulting complexes.