Cooperative hydration of carboxylate groups with alkali cations.
We study the orientational dynamics of water molecules in solutions of formate salts using femtosecond mid-infrared spectroscopy. We observe that combining the formate ion with small cations like Na(+) or Li(+) leads to a cooperative effect on the water dynamics. This observation points at the formation of solvent-separated ion pairs.
FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands. h.bakker@amolf.nl.
Marcin
M
Pastorczak
Sietse T
ST
van der Post
Huib J
HJ
Bakker