Pressure-induced new chemistry
Lin Jianyan, Du Xin, Yang Guochun †
       

(a) CsF3 at 100 GPa in a C2/m structure. (b) CsF5 at 150 GPa in an Fdd2 structure. (c) F- 43 m -BaF5 at 200 GPa. (d) LiCs in the CsCl structure at 150 GPa. ELF maps of CsF5 (e) and BaF5 (f).