Hydrates and ammonium salts of 4-nitrobenzenesulfonic acid: supramolecular organization and its relation to proton conductivity
作者:P. Yu. Barzilovich、K. A. Lyssenko、M. Yu. Antipin、S. M. Aldoshin
DOI:10.1007/s11172-011-0187-7
日期:2011.6
Structural features, the crystal packing, and the proton conductivity of a series of hydrates and ammonium salts of 4-nitrobenzenesulfonic acid were studied. It was shown that infinite cation associates containing the onium moiety are responsible for a substantial increase in the proton conductivity. The nature of the disorder in a series of crystals was investigated by performing X-ray diffraction studies at different temperatures. A new type of structural synthons, viz., anion-anion dimers stabilized by the SO3 −…NO2 interaction, was found and characterized and the role of solvent water molecules was elucidated based on high-resolution X-ray diffraction data. The water molecules serve mainly as channels for charge transfer from the cation to the anion with retention of the electroneutrality.
研究了一系列对硝基苯磺酸的水合物和铵盐的结构特征、晶体堆积和质子传导性。结果表明,含有鎓分子的无限阳离子联营体是质子电导率大幅提高的原因。通过在不同温度下进行 X 射线衍射研究,对一系列晶体的无序性质进行了调查。根据高分辨率 X 射线衍射数据,发现并描述了一种新型结构合子,即通过 SO3 -...NO2 相互作用而稳定的阴离子-阴离子二聚体,并阐明了溶剂水分子的作用。水分子主要作为电荷从阳离子转移到阴离子的通道,并保持电中性。