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. 2016 Mar 17;6:23160. doi: 10.1038/srep23160

Figure 1. Formation enthalpy per atom, H, of crystal structures obtained by the application of the GA technique to the H5S2 stoichiometry.

Figure 1

H5S2 takes a disorderly mixed structure of H2S and H2 molecules at 50 GPa, and it transforms into a monoclinic C2/m at 64 GPa and then into a triclinic P1 with mixed H2S and H3S structure at 92 GPa.