Appendix: Water makes the proton shake – ultrafast motions and fleeting geometries in proton hydration

A research team of scientists from the MBI and the Ben Gurion University of the Negev map fluctuating proton transfer motions of protons shared by two water molecules by directly monitoring the proton transfer mode with ultrafast infrared spectroscopy.

One sentence summary:
Protons in liquid water are predominantly shared by two water molecules with femtosecond proton elongations within a hydration site 10 to 50 times faster than proton hopping to a new site, the elementary proton transfer step in chemistry.