基于非循环碳醇的N5捐赠体希夫基的复合物:结构,氧,EPR和作为进化电催化剂的低活性
Folaranmi S Akogun1, Martyna Judd2, Alexandra G C Mort2
1Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
Inorganic chemistry
|September 3, 2024
概括
这项研究报告了新的N5捐赠者希夫基联结体及其金属复合物 (Co,Ni,Cu,Zn). 虽然只有Zn复合物是光的,但一些复合物显示电催化进化,尽管效果不如对照组.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- 新型配体的开发对于推进协调化学和催化作用至关重要.
- 希夫基联体为各种金属离子提供了多功能协调环境.
- 基于碳醇的配体由于其独特的电子和结构性质而引起人们的兴趣.
研究的目的:
- 合成和表征一种新的非循环五连体N5捐赠体希夫基联体 (HL2Etpyr) 和其金属复合物.
- 研究合成复合物的结构,电化学和光物理性质.
- 探索这些复合物的电催化潜力,用于进化反应.
主要方法:
- 从1,8-二甲基-3,6-丁丁丁-碳醇和2 - - - - - - - - - - - - - - - - 二甲基乙烯基胺中合成希夫基联体.
- 六种金属复合物 (Co,Ni,Cu,Zn) 的制备和结构特征 (X射线晶体学).
- 电化学研究 (循环电压测量) 和电子磁共振 (EPR) 光谱学.
- 通过受控电解进行电催化演化反应 (HER) 研究.
主要成果:
- 获得了6个具有三角形双金字塔N5捐赠环境的同结构金属复合体.
- 复合物表现出光,而电化学研究显示每个金属都有不同的氧化还原过程.
- EPR数据显示Zn,Ni和Cu复合体的联结体中心氧化,以及的Co (III) -联结基.
- 对于Ni,Cu和Co复合体,观察到电催化HER,Ni (II) 显示出最高的活性,但低于Ni (II) 四甲酸对照.
结论:
- 该研究成功合成和表征了一种新型的希夫基联结体及其多样化的金属复合物.
- 这些复合物表现出有趣的电化学和氧化还原性质,具有结合体中心氧化潜力.
- 虽然证明了HER的一些电催化活性,但实际应用需要进一步优化.
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