Ascertaining the 1D Hydrogen-Bonded Network in Organic Ionic Solids

Crystal engineering concepts are exploited to generate a 1D hydrogen-bonded network in a series of
organic salts (9−18) derived from dicyclohexylamine and various dicarboxylic acids (1−7) having linear as well as
twisted/angular functional topology. It is clearly demonstrated that the cyclic 0D hydrogen-bonded network involving
corresponding cations and anions in a secondary ammonium monocarboxylate salt (synthon B or C) can indeed be
transformed into a 1D network in 1:2 (acid/amine) dicarboxylate systems (9−12). The effects of the twisted/angular
functional topology of the anion moiety on the resultant supramolecular architectures in the corresponding 1:2 (acid/amine) salts (13−15) are examined. The 1:1 salts (16−18) of the dicarboxylic acids having twisted/angular functional
topology also display a 1D network.

本研究利用晶体工程（Crystal engineering）理念，在由二环己胺（dicyclohexylamine）与多种具备线性、扭曲/角型功能拓扑结构的二羧酸（dicarboxylic acids，1−7）衍生得到的一系列有机盐（9−18）中，构建出一维氢键网络（1D hydrogen-bonded network）。研究明确证实，仲铵单羧酸盐（secondary ammonium monocarboxylate salt）中对应阴阳离子所形成的零维环型氢键网络（合成子B或C，synthon B or C），可在1:2（酸/胺）型二羧酸盐（dicarboxylate）体系（9−12）中转化为一维氢键网络。本研究考察了阴离子基团的扭曲/角型功能拓扑结构对1:2（酸/胺）型对应盐（13−15）所生成的超分子结构（supramolecular architectures）的影响。具备扭曲/角型功能拓扑结构的二羧酸所形成的1:1型盐（16−18），同样呈现出一维氢键网络结构。