Direct Experimental Evidence for Halogen-Aryl π Interactions in Solution from Molecular Torsion Balances
作者:Han Sun、André Horatscheck、Vera Martos、Max Bartetzko、Ulrike Uhrig、Dieter Lentz、Peter Schmieder、Marc Nazaré
DOI:10.1002/anie.201700520
日期:2017.6.1
dissected halogen–aryl π interactions experimentally using a bicyclic N-arylimide based molecular torsion balances system, which is based on the influence of the non-bonded interaction on the equilibria between folded and unfolded states. Through comparison of balances modulated by higher halogens with fluorine balances, we determined the magnitude of the halogen–aryl π interactions in our unimolecular
我们使用基于双环N-芳基酰亚胺的分子扭转平衡系统实验性地分析了卤素-芳基π相互作用,该系统基于非键相互作用对折叠状态和未折叠状态之间的平衡的影响。通过比较高级卤素调节的平衡与氟平衡,我们确定了我们单分子体系中卤素-芳基π相互作用的幅度大于-5.0 kJ mol -1,这与生物分子体系中估计的幅度相当。我们的研究提供了溶液中卤素-芳基π相互作用的直接实验证据,到目前为止,该相互作用仅在固态下才得以揭示,并通过量子力学计算从理论上进行了评估。