The tetraiodopentabromide anion [I
4Br
5]
− shows a different stereoche
mistry depending on the type of solvent used to crystallize it. This contrastive relationship is illustrated with a yin–yang drawing; the Dead Sea (yang) represents the ionic liquid [HMIM][Br] fro
m which the
m>synm>-[I
4Br
5]
− anion was crystallized. The Mediterranean Sea (yin) represents an organic solvent, dichloro
methane, fro
m which the
m>antim>-[I
4Br
5]
− anion was isolated. Both iso
mers were characterized by single-crystal X-ray diffraction, Ra
man spectroscopy and quantu
m che
mical calculations. More infor
mation can be found in the Co
mmunication by S. Riedel et al. on
m.201604392" rel="references:https://doi.org/10.1002/chem.201604392">page 244 ff.