- 作者: 張海舟
- 作者服務機構: Department of Chemistry, National Dong Hwa University
- 中文摘要: The infrared spectra of DMSO/D2O and CH3COOD/D2O were measured under various concentrations and pressure. The frequencies of the C-H stretching vibration bands for DMSO/D2O mixtures increase with increasing the mole fraction of D2O, implying the contraction of the C-H bonds. As the pressure was elevated to 1.5 Gpa, the C-H vibrations of DMSO/D2O were altered into four bands at ~2927 cm-1, ~2941 cm-1, ~3007 cm-1, and ~3025 cm-1. Further concentration-dependent studies indicated that the spectral features at ~2941 cm-1 and ~3036 cm-1 arise from pressure-induced C-H---O hydrogen bonding between C-H in DMSO and oxygen atom in D2O. Ab initio calculations were performed, while the calculated results are consistent with the interpretations based on the high-pressure infrared experiments. Analogous to DMSO/D2O, the pressure-dependent studies on CH3COOD/D2O mixtures provide the evidence of the C-H---O hydrogen bonding as the pressure was elevated.
- 英文摘要: --
- 中文關鍵字: Pressure; Infrared; Spectroscopy
- 英文關鍵字: Pressure; Infrared; Spectroscopy