Front Cover: Use of Crown Ether Functions as Secondary Coordination Spheres for the Manipulation of Ligand–Metal Intramolecular Electron Transfer in Copper–Guanidine Complexes (Chem. Eur. J. 3/2021),Chemistry - A European Journal

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Front Cover: Use of Crown Ether Functions as Secondary Coordination Spheres for the Manipulation of Ligand–Metal Intramolecular Electron Transfer in Copper–Guanidine Complexes (Chem. Eur. J. 3/2021)
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2020-11-24 , DOI: 10.1002/chem.202004294
Sebastian Haaf ₁ , Elisabeth Kaifer ₁ , Hubert Wadepohl ₁ , Hans‐Jörg Himmel ₁

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The directed stimulation of intramolecular electron transfer (IET) between a metal and a redox‐active ligand in a coordination compound is important for a variety of applications in catalysis or material science. In this work we show that stimulation of IET is possible by metal coordination at a secondary coordination sphere. A copper complex with a redox‐active guanidine ligand and a remote crown ether function, dissolved in acetonitrile, could be present as Cu^I complex with a radical monocationic guanidine ligand or as Cu^II complex with a neutral guanidine ligand. The preferred electronic structure could be controlled by metal encapsulation into the crown ether function. More information can be found in the Full Paper by H.‐J. Himmel et al. on page 959.

中文翻译：

封面：使用冠醚功能作为二级配位球来操纵铜胍基配合物中的配体-金属分子内电子转移（化学期刊，欧洲期刊3/2021号）

金属与配位化合物中氧化还原活性配体之间的分子内电子转移（IET）的直接刺激对于催化或材料科学中的各种应用非常重要。在这项工作中，我们表明，通过二级配位领域的金属配位可能刺激IET。具有氧化还原活性胍配体和较远的冠醚官能团的铜络合物溶解在乙腈中，可以作为具有自由基单阳离子胍配体的Cu ^I络合物或具有中性胍配体的Cu ^II络合物存在。可以通过将金属封装到冠醚官能团中来控制优选的电子结构。可以在H.‐J的《全文》中找到更多信息。Himmel等。在第959页。

更新日期：2021-01-14

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