两种三蝶烯型分子钳的合成及其络合性能研究（英文）

Synthesis and Complexing Capacity of Two Triptycene-Based Molecular Tweezers

本文合成了两种含有三蝶烯单元的分子钳1和2,通过1H NMR、13C NMR、质谱、元素分析以及X射线单晶衍射等手段确证了化合物的结构。通过核磁滴定法以及ESI-MS法研究了化合物1和2在溶液中与7种缺电子客体的络合行为,结果表明:1)主客体之间的络合是按照摩尔比1∶1进行的;2)两种主体的配位能力1>2;3)缺电子程度大的客体与主体络合能力强。利用ORTEP 1.076理论计算模拟主客体络合行为,结果表明非共价键相互作用在主客体形成夹心络合物的过程中起着重要作用。

Triptycene-based molecular tweezers 1 and 2 have been synthesized, their structure were characterized by 1 H NMR,13C NMR,MALDI-TOF,Elemental analysis and X-ray crystallography. The interactions between hosts and seven electron-deficient guests in solution were studied by 1 H NMR titration and ESI-MS. The results showed that： 1） 1 ∶ 1 complexes were formed between most of the hosts and guests; 2） host 1 has better binding ability than host 2; 3） the hosts would selectively bind with the electron-deficient guests. Moreover,the complexing behavior of 1·G1 was simulated by the program ORTEP 1. 076,which suggested that the noncovalent interactions play important roles in the formation of sandwich-type host-guest complexes.