摘要
通过1HNMR,ESI-MS,紫外-可见光谱等分析手段研究了两个新的质子化联吡啶盐客体与冠醚二苯并-24-冠-8在溶液中和气态下的包合行为.研究结果表明,质子化的联吡啶盐与冠醚主要形成1∶1的超分子包合物,且存在夹心式的几何结构,双质子化的联吡啶盐比单质子化的联吡啶盐具有更强的结合冠醚的能力,其缔合常数分别为200,116L·mol-1.
The complexation behavior of two protonated 4,4＇-bipyridinium salts with dibenzo-24-crown-8 in solution and gas state was studied by analysis of ^1H NMR, ESI-MS, and UV-Vis spectra. The obtained results show that supramolecular complex compounds with a 1 ： 1 stoichoimetry are formed, which are sandwiched. The diprotonated salt has a stronger association ability with dibenzo-24-crown-8 than the monoprotonated one, and the association constant is 200 and 116 L.mol^-1, respectively.
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2008年第11期1954-1958,共5页
Chinese Journal of Organic Chemistry
