This paper reports studies of IR spectra of a series of macrocyclic polyethers and their substitution derivatives and the information of steric effect in the molecule.

• 内酯冠醚化合物的红外光谱研究报道很少,特别是随醚环的扩大和醚环骨架上不同取代基的引入所引起的中红外光谱的变化尚缺乏研究。