Propensity of heavier halides for the water/vapor interface revisited using the Amoeba force field.
Tuma, L; Jenicek, D.; Jungwirth, P.,
Chemical Physics Letters, 411  70 - 74 (2005)
Molecular dynamics simulations of aqueous sodium halide solutions in slab geometry were performed using the state-of-the-art polarizable Amoeba force field. The present calculations reveal a propensity of halide anions for the water/vapor interface, which correlates with the ionic size and polarizability and, therefore, increases in the series Cl- < Br- < I-. These results are in a quantitative agreement with previous calculations employing much simpler polarizable potentials and are supported by a mounting experimental evidence from photoelectron and non-linear optical and vibrational spectroscopies.