Department of Chemistry "Ugo Schiff", via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
Consorzio per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
Molecules. 2018 Mar 3;23(3):572. doi: 10.3390/molecules23030572.
We describe the synthesis and the structural characterization of new H₂L(CF₃CO₂)₂ () and H₂L(Ph₂PO₄)₂ () compounds containing the diprotonated form (H₂L) of the tetrazine-based molecule 3,6-di(pyridin-4-yl)-1,2,4,5-tetrazine. X-ray diffraction (XRD) analysis of single crystals of these compounds showed that H₂L displays similar binding properties toward both anions when salt bridge interactions are taken into account. Nevertheless, the different shapes, sizes and functionalities of trifluoroacetate and diphenyl phosphate anions define quite different organization patterns leading to the peculiar crystal lattices of and . These three-dimensional (3D) architectures are self-assembled by a variety of non-covalent forces, among which prominent roles are played by fluorine-π (in ) and anion-π (in ) interactions.
我们描述了新化合物 H₂L(CF₃CO₂)₂ () 和 H₂L(Ph₂PO₄)₂ () 的合成和结构特征，这些化合物含有基于四嗪的分子 3,6-二（吡啶-4-基）-1,2,4,5-四嗪的双质子化形式 (H₂L)。这些化合物单晶的 X 射线衍射 (XRD) 分析表明，当考虑盐桥相互作用时，H₂L 对两种阴离子表现出相似的结合特性。然而，三氟乙酸根和二苯基磷酸根阴离子的不同形状、大小和功能定义了非常不同的组织模式，导致和的独特晶体结构。这些三维 (3D) 结构是通过多种非共价力自组装的，其中氟-π（在 中）和阴离子-π（在 中）相互作用起着重要作用。
