测定了冠-4、冠-5、冠-6、冠-8等四种冠醚与高氯酸锂配位前后的中红外吸收光谱,观察到十种振动吸收峰在配位之后发生了变化.从水分子的配位状态、配位水吸收峰的锂同位素位移、冠醚骨架振动的变化、C=O吸收峰的分裂、苯环吸收峰的位移和Li~+与ClO_4~-的配位等方面对配合物的结构进行了分析和讨论. The mid-infrared absorption spectra of crown-4, crown-5, crown-6, crown-8 and other crown ethers were measured before and after coordination with lithium perchlorate. Ten kinds of vibrational absorption peaks were observed after coordination From the coordination state of water molecules, the isotope shifts of lithium isotopes, the change of vibration of crown ether skeleton, the splitting of C = O absorption peak, the displacement of benzene ring absorption peak and the distribution of Li ~ + and ClO_4 ~ Bit and other aspects of the structure of the complex were analyzed and discussed.