To explore the operational role of noncovalent interactions in supramolecular architectures with designed topologies, a series of solid-state structures of 2- and 4-formylphenyl 4-substituted benzenesulfonates was investigated. The compounds are 2-formylphenyl 4-methylbenzenesulfonate, C14H12O4S, 3a, 2-formylphenyl 4-chlorobenzenesulfonate, C13H9ClO4S, 3b, 2-formylphenyl 4-bromobenzenesulfonate, C13H9BrO4S, 3c, 4-formylphenyl 4-methylbenzenesulfonate, C14H12O4S, 4a, 4-formylphenyl 4-chlorobenzenesulfonate, 4b, C13H9ClO4S, and 4-formylphenyl 4-bromobenzenesulfonate, C13H9BrO4S, 4c. The title compounds were synthesized under basic conditions from salicylaldehyde/4-hydroxybenzaldehydes and various aryl sulfonyl chlorides. Remarkably, halogen-bonding interactions are found to be important to rationalize the solid-state crystal structures. In particular, the formation of O...X (X = Cl and Br) and type I X...X halogen-bonding interactions have been analyzed by means of density functional theory (DFT) calculations and characterized using Bader's theory of `atoms in molecules' and molecular electrostatic potential (MEP) surfaces, confirming the relevance and stabilizing nature of these interactions. They have been compared to antiparallel π-stacking interactions that are formed between the arylsulfonates.
为了探索非共价相互作用在具有设计拓扑结构的超分子结构中的作用,我们研究了一系列 2-和 4-甲酰基苯基 4-取代苯磺酸盐的固态结构。这些化合物是 2-甲酰基苯基 4-甲基苯磺酸盐 C14H12O4S、3a、2-甲酰基苯基 4-氯苯磺酸盐 C13H9ClO4S、3b、2-甲酰基苯基 4-溴苯磺酸盐 C13H9BrO4S、3c、4-甲基苯磺酸 4-甲酰基苯酯(C14H12O4S)、4a、4-氯苯磺酸 4-甲酰基苯酯(C13H9ClO4S)、4b 和 4-溴苯磺酸 4-甲酰基苯酯(C13H9BrO4S)、4c。标题化合物是在碱性条件下由水杨醛/4-羟基苯甲醛和各种芳基磺酰氯合成的。值得注意的是,卤素键相互作用对固态晶体结构的合理性非常重要。特别是通过密度泛函理论(DFT)计算分析了 O...X(X = Cl 和 Br)和 I 型 X...X卤键相互作用的形成,并利用贝德尔的 "分子中原子 "理论和分子静电势(MEP)表面进行了表征,证实了这些相互作用的相关性和稳定性质。我们将这些相互作用与芳基磺酸盐之间形成的反平行π堆积相互作用进行了比较。