Angevine Devin J, Benedict Jason B
Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260-3000, USA.
IUCrdata. 2022 May 17;7(Pt 5):x220510. doi: 10.1107/S2414314622005107. eCollection 2022 May.
In the title double proton-transfer salt, CHN ·2CHO , consisting of a 1:2 ratio of 4,4'-(ethene-1,2-diyl)dipyridinium cations ( bipyridinium ethyl-ene) to 2-hy-droxy-3-meth-oxy-benzoate anions (-vanillate), the complete cation is generated by crystallographic inversion symmetry and it is linked to adjacent -vanillate anions by N-H⋯O hydrogen bonds, forming trimolecular assemblies. The trimers are linked by C-H⋯O hydrogen bonds as well as aromatic π-π stacking inter-actions into a three-dimensional network. The anion features an intra-molecular O-H⋯O hydrogen bond.
在标题所示的双质子转移盐CHN·2CHO中，由4,4'-（乙烯-1,2-二基）二吡啶鎓阳离子（联吡啶鎓乙烯）与2-羟基-3-甲氧基苯甲酸根阴离子（香草酸根）按1:2比例组成，完整的阳离子通过晶体学反演对称性产生，并且它通过N-H⋯O氢键与相邻的香草酸根阴离子相连，形成三分子聚集体。三聚体通过C-H⋯O氢键以及芳香π-π堆积相互作用连接成三维网络。该阴离子具有分子内O-H⋯O氢键。
