抄録
Hydrogen sulfide H2S had been interested in its structural behaviors at low temperature and high pressure as a similar material with H2O ice and as a hydrogen bonding system until 2004. Many solid phases were found and their crystal structures, molecular motions, and hydrogen bonding state were studied by nuclear magnetic resonance, raman, infrared, x-ray, and neutron experiments. Research on hydrogen sulfide became very active again after the discovery of superconductivity at 200 GPa in 2014. The authors think that the crystal structures of H2S previously reported should be re-examined by using recent structure-analysis techniques with density functional theory calculations. In this article, we will summarize recent structural aspects about some phases of hydrogen sulfide.
