| 1-羟基-2-乙酰基呫吨酮类希夫碱双核配合物的研究 Ⅰ Cu(Ⅱ)配合物的合成和表征 |
| STUDIES ON DINUCLEAR COMPLEXES OF SCHIFF BASES DERIVED FROM 1-HYDROXY-2-ACETYL-XANTHENONE 1. SYNTHESIS AND CHARACTERIZATION OF COPPER(11)COMPLEXES |
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| 摘要: 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H2L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. |
| 关键词: 1-羟基-2-乙酰呫吨酮 希夫碱配合物 铜 |
| 基金项目: |
| Abstract: Three dinuclear copperp (11)complexes of Schiff bases, H2L, derived from l-hydroxy-2-acetyl-xanthenone and S-methyl dithiocarbazate have been synthesized and characterized by elemental analyses, IR, UV-visible, ESR, magnetic susceptibility and cyclic voltammetry measurements.The results obtained show that the weak-exchange is found between two copper atoms in these complexes and that the complex with bridging OAc- ligand has irreversible redox behavior, whereas the other complexes undergo quasi-reversible two electron reduction. In the presence of pyridine, the OAc- bridging complex shows the increment of the reversible redox behavior and the other complexes display a reversibly two-stepwise one electron transfer with the reduction potential more positive. |
| Keywords: 1-hydroxy-2-acetyl-xanthenone Schiff base complex copper |
| 投稿时间：1990-08-10 |
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| 张朝,韩志坚,戴寰.1-羟基-2-乙酰基呫吨酮类希夫碱双核配合物的研究 Ⅰ Cu(Ⅱ)配合物的合成和表征[J].无机化学学报,1991,7(1):116-121. |
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