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首页> 外文期刊>Crystal growth & design >Construction of Three-Dimensional Honeycomb-like Supramolecular Host Network with Dicationic Metallotecton Cu[(2-C4H3N2)(2)C(OH)(2)](2)(2+) through Cooperative Hydrogen-Bonding and Anion-pi Interactions
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Construction of Three-Dimensional Honeycomb-like Supramolecular Host Network with Dicationic Metallotecton Cu[(2-C4H3N2)(2)C(OH)(2)](2)(2+) through Cooperative Hydrogen-Bonding and Anion-pi Interactions

机译:通过氢键结合和阴离子-π相互作用的双阳离子金属弹体Cu [(2-C4H3N2)(2)C(OH)(2)](2)(2+)构造三维蜂窝状超分子宿主网络

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摘要

In situ carbonyl hydration of di-2-pyrazinylmethanone (2-C4H3N2)(2)CO upon metal coordination leads to three isostructural mononuclear copper(II) complexes Cu(L-1')(2)X-2 center dot nH(2)O (L-1' = (2-C4H3N2)(2)C(OH)(2), n = 4.5; X = ClO4-, BF4-, PF6-) whose three-dimensional supramolecular host network, which contains honeycomb-like channels that accommodate water guests, is constructed from the consolidation of mononuclear Cu(L-1')(2)(2+) metallotectons via cooperative hydrogen-bonding and anion-pi interactions. Replacing one pyrazinyl ring of L-1' by a less pi-acidic pyridyl ring to yield a related ligand leads to the formation of Cu(L-2')(2)(ClO4)2 center dot 4H(2)O 4 (L-2' = (2-C4H3N2)(2-C5H4N)C(OH)(2)), which exhibits a different supramolecular framework of lesser stability on account of reduced anion-pi bonding interaction.
机译:二-2-吡嗪基甲酮(2-C4H3N2)(2)CO在金属配位上的原位羰基水合导致三个同构单核铜(II)配合物Cu(L-1')(2)X-2中心点nH(2 )O(L-1'=(2-C4H3N2)(2)C(OH)(2),n = 4.5; X = ClO4-,BF4-,PF6-),其三维超分子主网络包含蜂窝容纳水客人的类似通道,是通过单核Cu(L-1')(2)(2+)金属核通过协同氢键和阴离子-pi相互作用的固结而构建的。用较少的π-酸性吡啶基环取代一个L-1'的吡嗪基环以产生相关的配体导致形成Cu(L-2')(2)(ClO4)2中心点4H(2)O 4( L-2'=(2-C4H3N2)(2-C5H4N)C(OH)(2)),由于阴离子-π键相互作用降低,因此表现出不同的超分子构架,稳定性较低。

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