Zeng Xue-Yun, Wang Yu-Ling, Lin Zhao-Ting, Liu Qing-Yan
College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.
Inorg Chem. 2020 Sep 8;59(17):12314-12321. doi: 10.1021/acs.inorgchem.0c01419. Epub 2020 Aug 12.
The diphenylsulfone-3,3'-disulfo-4,4'-dicarboxylic acid (H-DPSDSDC) ligand and its coordination polymers, [KZn(CHSO)(HO)] () and {[Cu(μ-OH)(CHSO)(HO)(DMF)]·3(HO)} () (CHSO = diphenylsulfone-3,3'-disulfo-4,4'-dicarboxylate), were synthesized. The Zn(HO) units in are connected by DPSDSDC ligands to generate a one-dimensional (1D) chain, which is bridged by K-O bonds associated with bridging water molecules and sulfonate groups to yield a two-dimensional (2D) layer. In , the 1D hydroxyl-bridging Cu(II) chains are connected by DPSDSDC ligands to give a 2D layer. The 2D layers in and are further connected by interlayered hydrogen bonds to give three-dimensional (3D) frameworks. Compounds and have good conductivities of 1.57 × 10 and 5.32 × 10 S cm, respectively. Continuous well-defined hydrogen bonding networks associated with water molecules, sulfonate groups, and carboxylate groups were observed in compounds and . Such hydrogen bonding networks provide hydrophilic domains and effective transfer pathways for protons. Here, we present elegant examples of a precise determination of the pathways for proton transport.
合成了二苯砜 - 3,3'-二磺酸 - 4,4'-二羧酸（H-DPSDSDC）配体及其配位聚合物[KZn(CHSO)(HO)] () 和{[Cu(μ-OH)(CHSO)(HO)(DMF)]·3(HO)} () （CHSO = 二苯砜 - 3,3'-二磺酸 - 4,4'-二羧酸盐）。 中的Zn(HO)单元通过DPSDSDC配体连接生成一维（1D）链，该链由与桥连水分子和磺酸根基团相关的K-O键桥连形成二维（2D）层。在 中，一维羟基桥连的Cu(II)链通过DPSDSDC配体连接形成二维层。 和 中的二维层通过层间氢键进一步连接形成三维（3D）骨架。化合物 和 分别具有1.57 × 10 和5.32 × 10 S cm的良好电导率。在化合物 和 中观察到与水分子、磺酸根基团和羧酸根基团相关的连续且明确的氢键网络。这种氢键网络为质子提供了亲水域和有效的传输途径。在此，我们展示了精确确定质子传输途径的精妙示例。
