University Chemistry ›› 2024, Vol. 39 ›› Issue (12): 302-309.doi: 10.12461/PKU.DXHX202404074

• Chemistry Laboratory • Previous Articles     Next Articles

Determining the Room-Temperature Conformation of Glycerol Molecules Using Infrared and Raman Spectroscopy Combined with Quantum Mechanical Calculations

Dong Xie, Xiaocheng Tian, Xia Zhou, Hong Gao, Li Wu, Li Zhang, Panpan Zhou   

  1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
  • Received:2024-04-11 Accepted:2024-05-20 Published:2024-12-17
  • Contact: Panpan Zhou E-mail:zhoupp@lzu.edu.cn

Abstract: This study integrates experimental measurements and theoretical calculations of glycerol, typically conducted in undergraduate courses. The objective is to help students master the utilization of infrared and Raman spectroscopy along with the computational simulation of theoretical spectra. Infrared and Raman spectra of glycerol were experimentally obtained. Theoretical calculations identified the stable conformations of glycerol molecules, and the spectra for each conformation were subsequently computed. By comparing the experimental spectra with the theoretical predictions, the stable conformation of glycerol at room temperature was determined.

Key words: Glycerol, Theoretical calculation, Infrared spectroscopy, Raman spectroscopy