水杨醛型Schiff碱配合物的合成、表征与磁性研究

以乙醇为溶剂、水杨醛缩邻氨基苯酚(L)与过渡金属(M)硝酸盐或醋酸盐作用,制得了6个LM及6个L2M配合物(合成过程中须将反应混合液蒸馏至干才能得到Cr、Fe、Ni的配合物)。对所制备的配合物进行了摩尔电导、磁化率、DTA、SEM、UV、IR等表征。结果表明:LM(M=Cr3+、Mn2+、Fe3+、Co2+)为平面正方形场低自旋型;LNi、LCu及L2M(M=Mn2+,Co2+,Cu2+)为四面体场高自旋型;其余经蒸馏得到的L2M(M=Cr3+,Fe3+,Ni2+)则为八面体场配合物。配合物均为顺磁性,除LCr、LFe、LCu及L2Cu也有电子轨道运动的贡献外,磁性主要是电子自旋运动的贡献,LM分子中有水参与配位,并有分子内氢键形成。

Synthesis and Characterization of Salicyl Schiff Base Transition-metal Coordination Compounds

A series of salicyl Schiff base (L) transition-metal (M) coordination compounds were prepared in alcohol solvent.Their structures were characterized by DTA,SEM,UV,IR,molar conductance and magnetic moments determination techniques.The results indicated that water is coordinated to metal and intramolecular hydrogen bond is formed in the LM coordination compounds.LM〔M(Ⅱ)=Mn,Co;M(Ⅲ)=Cr,Fe〕 are square planar coordination compounds.LNi,LCu and L_2M(M=Mn~(2+),Co~(2+),Cu~(2+)) are tetrahedral coordination compounds.L_2M(M=Cr~(3+),Fe~(3+),Ni~(2+)) are octahedral coordination compounds,which were prepared through distillation process.They are all paramagnetic.