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Syntheses and Crystal Structures of a Series of Dysprosium–Manganese–Sodium 12-Metallacrown-4 Compounds with Halogenated Benzoate Bridging Anions
Journal of Chemical Crystallography ( IF 0.4 ) Pub Date : 2021-02-02 , DOI: 10.1007/s10870-021-00880-7
Chad H. Michael , Matthias Zeller , Curtis M. Zaleski

A series of heterotrimetallic dysprosium–manganese–sodium 12-metallacrown-4 compounds has been synthesized and characterized by single-crystal X-ray analysis: DyNaX4[12-MCMn(III)N(shi)-4], where X = 2-fluorobenzoate (1), 3-fluorobenzoate (2), 4-fluorobenzoate (3), 2-chlorobenzoate (4), 4-chlorobenzoate (5), 3-bromobenzoate (6), and 2-iodobenzoate (7); MC is metallacrown; and shi3− is salicylhydroximate. Each 12-MC-4 framework is comprised of four ring MnIII ions and four shi3− ligands. The oxime oxygen atoms of the shi3− ligands produce a central cavity which then binds one DyIII ion and one Na+ ion on opposite sides. In each molecule four halogenated benzoate anions bridge between the central DyIII ion and the ring MnIII ions via the carboxylate groups. The identity of the halogenated benzoate anion has little effect on the structure of the [12-MCMn(III)N(shi)-4] framework as determined by several metrical parameters: the MC cavity radius, the average cross cavity MnIII–MnIII distance, the average cross cavity oxime oxygen-oxime oxygen distance, and the distance of the DyIII from the oxime oxygen mean plane. For 17 these metrical parameters are strikingly similar; thus, providing further reinforcement of one hallmark of metallacrown chemistry—the ability to substitute various components of the molecule without affecting the overall structure which can be used for the fine-tuning of molecular properties.

Graphic Abstract

Four 4-fluorobenzoate (4-Fben) anions bridge between the central DyIII ion and the ring MnIII ions in the metallacrown compound DyNa(4-Fben)4[12-MCMn(III)N(shi)-4](H2O)4·4DMF.



中文翻译:

Hal化桥联阴离子系列s-锰-钠12-金属拉丝-4化合物的合成和晶体结构

一系列heterotrimetallic镝-锰-钠12 metallacrown-4化合物的已被合成和表征通过单晶X-射线分析:DYNAX 4 [12-MC的Mn(III)N(SHI) -4],其中X -  = 2-氟苯甲酸酯(1),3-氟苯甲酸酯(2),4-氟苯甲酸酯(3),2-氯苯甲酸酯(4),4-氯苯甲酸酯(5),3-溴苯甲酸酯(6)和2-碘苯甲酸酯(7) ; MC是金属催乳剂;shi 3-是水杨氢氧酸酯。每个12-MC-4骨架均由四个环Mn III离子和四个shi 3-配体。shi 3-配体的肟氧原子产生一个中心腔,然后该中心腔在相对侧结合一个Dy III离子和一个Na +离子。在每个分子中,四个Dy III离子和环Mn III离子之间的四个卤代苯甲酸酯阴离子通过羧酸酯基团桥接。卤代苯甲酸根阴离子的身份对[12-MC Mn(III)N(shi) -4]骨架的结构影响很小,这由几个度量参数确定:MC腔半径,平均横腔Mn III – Mn III距离,平均腔内肟氧-肟氧距离和Dy III的距离从肟氧平均平面 对于17,这些度量参数非常相似。因此,可以进一步增强金属漆化学的一个特征-取代分子的各种成分而不影响可用于分子特性微调的整体结构的能力。

图形摘要

金属腔化合物DyNa(4-Fben)4 [12-MC Mn(III)N(shi) -4]()中的四个4-氟苯甲酸酯(4-Fben)阴离子在中央Dy III离子与环Mn III离子之间桥接H 2 O)4 ·4DMF。

更新日期:2021-02-02
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