Kwon So Hyeon, Lee Sunwoo, Tessarolo Jacopo, Lee Haeri
Department of Chemistry, Hannam University 34054 Republic of Korea
Department of Chemistry, Chonnam National University Gwangju 61186 Republic of Korea
RSC Adv. 2024 Oct 16;14(44):32655-32660. doi: 10.1039/d4ra06058j. eCollection 2024 Oct 9.
In this work, we report a series of dinuclear Zn(ii) complexes and their corresponding catalytic properties for a transesterification reaction. We show that the structures and catalytic activity of the complexes are strongly dependent on their molecular structures surrounding the metal centres. The use of halides yields a series of [ZnXL] (X = Cl, Br, and I) complexes with low catalytic activity because of the fully saturated coordination environment, whereas Zn(ClO) results in two isomeric [ZnL] 1D coordination polymers with efficient catalytic properties, despite being susceptible to structural rearrangement and consequent changes in catalytic activity over time. The response to chemical stimuli to trigger anion exchange allows for switching on/off the systems' catalytic activity, simultaneously recovering the catalytic effect upon degradation and thus reconstructing the coordination environment of the 1D polymer.
在这项工作中，我们报道了一系列双核锌（II）配合物及其在酯交换反应中的相应催化性能。我们表明，配合物的结构和催化活性强烈依赖于金属中心周围的分子结构。卤化物的使用产生了一系列催化活性较低的[ZnXL]（X = Cl、Br和I）配合物，这是由于其完全饱和的配位环境，而Zn(ClO)则产生了两种具有高效催化性能的异构[ZnL]一维配位聚合物，尽管它们易发生结构重排并随时间导致催化活性发生变化。对化学刺激的响应以触发阴离子交换，能够开启/关闭体系的催化活性，同时在降解时恢复催化效果，从而重建一维聚合物的配位环境。
