High‐pressure Raman study of liquid and solid ethanol at pressures up to 17 GPa

Abstract

Abstract High‐pressure Raman spectra of liquid and solid ethanol were measured at pressures up to 17 GPa and 300 K in a gasketed diamond anvil cell. The frequencies of in‐phase and out‐of‐phase OH stretching vibrations which characterize the hydrogen bond along the zig‐zag chain decrease with increasing pressure with slopes(dν/d P ) of −14.3 and −12.4 cm −1 GPa −1 , and they overlap with the CH stretching mode at about 11 and 17 GPa, respectively. No solid‐solid phase transition was observed at pressures up to 17 GPa.