Cover Feature: Unusual Caesium Monensinate A: Crystallographic Evidence for the Formation of Dinuclear Coordination Species in the Solid State (Chem. Eur. J. 18/2025)
Nikolay Petkov, Prof. Anela Ivanova, Prof. Miroslava Nedyalkova, Prof. Svetlana Simova, Petar Dorkov, Prof. Angel Ugrinov, Prof. Ivayla Pantcheva
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引用次数: 0
Abstract
The Cover Feature shows the crystal structure of a caesium complex of the polyether ionophorous antibiotic monensin. It features two bridging Cs+ ions trapped in the hydrophilic cavity of two monensinate anions, in contrast to the mononuclear “closed” constructs of the other alkali ions. MD modelling unveils the effect of solvent polarity (methanol vs. chloroform) on monensin cyclization and its ability to form “open”, “semi-open” and “closed” structures with alkali ions, thus explaining the behaviour of the complexes in the two solvents. More information can be found in the Research Article by N. Petkov, I. Pantcheva and co-workers (DOI: 10.1002/chem.202404453).
封面特征显示了聚醚离子抗生素莫能菌素的铯配合物的晶体结构。它的特点是两个桥接的Cs+离子被困在两个monensinate阴离子的亲水腔中,与其他碱离子的单核“封闭”结构形成鲜明对比。MD模型揭示了溶剂极性(甲醇vs氯仿)对莫能菌素环化及其与碱离子形成“开放”、“半开放”和“封闭”结构的能力的影响,从而解释了配合物在两种溶剂中的行为。更多信息可以在N. Petkov, I. Pantcheva及其同事的研究文章中找到(DOI: 10.1002/chem.202404453)。
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