一个含有四个"混合"胺/胺N-捐赠体的铁宏环复合体,作为氧化与过氧化的催化剂
Tim Pfister1, Tilo Söhnel1, Terrence J Collins2
1School of Chemical Sciences and, Centre for Green Chemical Science, University of Auckland, 23 Symonds St, Auckland, 1010, New Zealand.
Chemistry (Weinheim an der Bergstrasse, Germany)
|August 2, 2023
概括
一种新的铁复合物与基一起作为一种高效的催化剂,用于氧化使用过氧化的有机染料. 这种先进的催化剂与类似的铁复合物相比,显示出更高的活性和稳定性.
科学领域:
- 协调化学 协调化学
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
背景情况:
- 宏循环配体对于开发用于催化应用的新型金属复合物至关重要.
- 铁复合物,特别是那些模仿TAML (tetraamido macrocyclic ligand) 结构的铁复合物,正在被用于氧化催化.
- 催化剂的稳定性和活性高度依赖于连接体设计和金属中心协调.
研究的目的:
- 合成和描述一种新型的宏环铁复合物[Fe^III^Cl(L) ],其中含有基.
- 用过氧化评估[Fe^III^Cl(L) ]在使用过氧化氧化有机染料Orange II的氧化中的催化效率.
- 为了比较新铁复合物的催化性能和稳定性,与类似的含的铁-TAML复合物进行比较.
主要方法:
- 通过去质子化[H_4 L][OTf]_2.2.2 的方法合成宏环益刚[H_2 L].
- [H_2 L]与铁(II) 化物的金属化形成了目标复合物[Fe^III^Cl(L) ].
- 使用过氧化和动力参数的测定,对Orange II染料进行催化氧化.
主要成果:
- 合成的铁复合物[Fe^III^Cl(L) ]有效地催化二的氧化由过氧化在水溶液中的氧化.
- 与相似的替代复合物相比,含的复合物在pH 7时表现出明显更高的催化活性.
- 该复合物表现出极好的抗酸促脱金属化稳定性,在pH值5及以上保持稳定.
结论:
- 基组的加入到宏循环连接体中极大地增强了铁复合物的催化特性.
- [Fe^III^Cl(L) ] 是一个有前途的,稳定的,高活性氧化催化剂,可用于环境应用.
- 干设计在调整铁基氧化催化剂的性能方面发挥着关键作用.
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