Fig. 2: Crystal structures for the Ba-Re-H system.
From: Search for superconducting icosahedral hydrides via coordination number engineering
a P63/mmc-BaReH9 at 0 GPa, b \({Pm}\bar{3}-{{\rm{BaReH}}}_{12}\) at 100 GPa, c P2/m-BaReH12 at 300 GPa. The green, gray and pink balls represent barium (Ba), rhenium (Re) and hydrogen atoms, respectively. d The enthalpy difference curves with respect to \({Pm}\bar{{\boldsymbol{3}}}-{{\rm{BaReH}}}_{12}\).
