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以1-羟基-2-乙酰基咕吨酮和肼基二硫代甲酸甲酯缩合所得希夫碱(以H_2L表示),与Cu(Ⅱ)反应制得三种双核配合物。通过元素分析、红外、紫外-可见,磁化率、电子顺磁共振和循环伏安法等对配合物进行了表征和研究.表明这些配合物中,在所处化学环境不同的两个Cu(Ⅱ)之间存在较弱的自旋交换作用。桥联配体为醋酸根时,表现出不可逆的氧化还原性质,其余配合物显示准可逆的双电子转移过程.在吡啶存在时,醋酸根配位的双核铜配合物的氧化还原可逆性增加,其余配合物表现出可逆的两步单电子转移过程,同时还原电位正向移动.
Three kinds of binuclear complexes were prepared by the reaction of Cu (Ⅱ) with Schiff base (expressed as H_2L) obtained by condensation of 1-hydroxy-2-acetyl xanthogenone and methyl hydrazinodithiocarbamate. The complex was characterized and characterized by elemental analysis, IR, UV-vis, magnetic susceptibility, para-paramagnetic resonance and cyclic voltammetry. It is shown that in these complexes, ) There is a weaker spin exchange between. When the bridging ligand is acetate, it shows irreversible redox properties, while other complexes show quasi-reversible double-electron transfer.In the presence of pyridine, the redox reversibility of acetate-coordinated dinuclear copper complex increases, The remaining complexes showed a reversible two-step single electron transfer process, while the reduction potential is moving forward.