Structural and dynamics properties of aqueous NaCl 1M solution were studied
from molecular dynamics simulation data obtained with 2117 rigid water mol
ecules, 40 Na+ and 40 Cl- at 293K. The stability of the local structures fo
rmed by ion pairs was determined first by their life times: 0.13, 0.14 and
0.27 ps for, respectively, negatively charged, neutral and positively charg
ed ion pairs; The non-neutral pairs are stabilized by, at least, one counte
rion. The nature of the peaks and bumps of the ion-ion radial distribution
functions can be recovered from structural analysis so that it is possible
to conclude that large ionic clusters stabilized by hydration molecules can
be formed in electrolyte solutions. Self-diffusion coefficient analyses re
inforced the clusters' formation. (C) 2000 Elsevier Science B.V. All rights
reserved.