Comparison of silver atom solvation in glassy and polycrystalline ices

Electron spin echo studies have been carried out for Ag0 in a 9 M sodium perchlorate aqueous glassy matrix at 4.2 K. The analysis of the nuclear modulation patterns shows that the hydration structure of Ag0 initially formed at 4.2 K is the same as that in polycrystalline ice. In contrast to polycrystalline ice, no change in the solvation structure takes place upon warming the sample to 77 K. The solvation process via OH bond rotation in polycrystalline ice is suggested to occur via defects in the ice structure adjacent to Ag0 in addition to hydrogen bonding interactions. (AIP)