冠醚与碱金属、碱土金属有良好的配位作用,氮原子取代冠醚的部分氧原子,可改善它与过渡金属的配位能力,套索冠醚既有简单单环冠醚的动态性质,又有窝穴体分子的三维键合特征,因而进一步提高了其配位能力及配位选择性。目前,氮杂套索冠醚的NMR研究已引起人们的重视,但氮杂套素冠醚与金属离子配位的NMR研究尚不多见。本工作使用VarainXL-200超导谱仪对新合成的含吡啶氮杂套索冠醚(结构见图1)与Ba~+的配位进行了探 Crown ether and alkali metal, alkaline earth metal has a good coordination role, the nitrogen atom to replace part of the crown ether oxygen atoms can improve its coordination ability with the transition metal, lauricotrope both simple single ring crown ether dynamic properties , But also three-dimensional hole nest cavity molecular bonding characteristics, thereby further enhancing its coordination ability and coordination selectivity. At present, the NMR study of azaserous crown ethers has aroused people’s attention, but the NMR study on the coordination of azaserine crown ethers with metal ions is still rare. In this work, we used the VarainXL-200 superconducting spectrometer to probe the newly synthesized pyridine azaserine crown ethers (structure shown in Figure 1) and Ba ~ +