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首页> 外文期刊>Crystal growth & design >Metal Cation-Supported Supramolecular Crown Ethers Featuring Hydrogen-Bonded Tetrameric Unit of 2-Hydroxy Pyridines
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Metal Cation-Supported Supramolecular Crown Ethers Featuring Hydrogen-Bonded Tetrameric Unit of 2-Hydroxy Pyridines

机译：金属阳离子支持的超分子冠醚，具有2-羟基吡啶的氢键四聚体单元

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摘要

Three solid compounds formulated as [Cu(ClpyOH)_4(H_2O)_2](PF_6)_2·(ClpyOH)_4 1, [Co(pyOH)_4(H_2O)_2]-(ClO_4)_22, and [Fe(ClpyOH)_4Br_2] 3 (ClpyOH = 5-chloro-2-hydroxy pyridine; pyOH = 2-hydroxy pyridine) have been shown by single-crystal structural analysis to be 3D networks, which are constructed by metal cation-supported crown ether-like species featuring hydrogen-bonded tetrameric unit of 2-hydroxy pyridines through extensive intermolecular interactions. The similar 16-membered hydrogen-bonded macrocyclic rings are still remaining in their solid structures when the molar ratio of M(II) and ligand were changed to 1:2 or 1:3 in their reaction systems for 1-3, suggesting that this kind of macrocyclic ring is more stable than other products of M(II) and ligand. Differences in the overall structural architectures in 1-3 are due to the interplay between the strong O-H…O hydrogen-bonding interactions and/or a variety of weaker interactions involving the halogens, C-H donors, and the aromatic systems.
机译：配制为[Cu（ClpyOH）_4（H_2O）_2]（PF_6）_2·（ClpyOH）_4 1，[Co（pyOH）_4（H_2O）_2]-（ClO_4）_22和[Fe（ClpyOH） _4Br_2] 3（ClpyOH = 5-氯-2-羟基吡啶; pyOH = 2-羟基吡啶）已通过单晶结构分析显示为3D网络，由金属阳离子负载的冠醚样物质构成，其特征为通过广泛的分子间相互作用氢键合的2-羟基吡啶四聚体单元。当M（II）和配体的摩尔比在反应体系中1-3变为1：2或1：3时，相似的16元氢键键合大环仍保留在其固体结构中，这表明这种大环比其他M（II）和配体产物更稳定。 1-3中整体结构的差异是由于强O-H…O氢键相互作用和/或涉及卤素，C-H供体和芳族体系的各种较弱相互作用之间的相互作用。

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