Comparison of the percolation model with computer simulation results on different water models

The predictions of the connectivity properties of the hydrogen-bonded networks in liquid water based on the percolation model proposed by H. E. Stanley and co-workers has been compared with Monte Carlo computer simulations using the ST2 and MCY potentials at different temperatures. The comparison is based on a geometric hydrogen-bond definition. Reasons for the good agreement found fop the average number of waters with exactly j hydrogen bonds are discussed. Also, the conflicting conclusions on the density of 4-bonded patches were re-examined and were found to be the result of using different water models in the conflicting studies.