Figure (IMAGE) Osaka University Caption a. Crystal structure of the H5S2 compound predicted by genetic algorithm technique. The structure forms a mixed structure of H2S and H3S molecules. b. Comparison of superconducting critical temperature (Tc) among experimental and calculated results. The Tc value calculated for H5S2 shows a good agreement with the experimental data of the superconducting phase II (SC-II). Credit Osaka University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.