TIP4P/2005 model of water

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The TIP4P/2005 model is a re-parameterisation of the original TIP4P potential for simulations of water. TIP4P/2005 is a rigid planar model, having a similar geometry to the Bernal and Fowler (BF) model.


Water empirical1.png

r_{\mathrm {OH}} (Å) \angleHOH , deg \sigma (Å) \epsilon/k (K) q(O) (e) q(H) (e) q(M) (e) r_{\mathrm {OM}} (Å)
0.9572 104.52 3.1589 93.2 0 0.5564 -2q(H) 0.1546

Phase diagram

The phase diagram of the TIP4P/2005 model is given in a publication by Abascal, Sanz and Vega.

Surface tension

The surface tension has been studied for the TIP4P/2005 model by Vega and Miguel.

Self-diffusion coefficient

The TIP4P/2005 potential has a self-diffusion coefficient, in bulk water at 298 K, of 0.21 Å2 ps−1 in a classical simulation of 216 water molecules (experimental value: 0.23 Å2 ps−1).


  1. J. L. F. Abascal and C. Vega "A general purpose model for the condensed phases of water: TIP4P/2005", Journal of Chemical Physics, 123 234505 (2005)
  2. C. Vega, J. L. F. Abascal and I. Nezbeda, "Vapor-liquid equilibria from the triple point up to the critical point for the new generation of TIP4P-like models: TIP4P/Ew, TIP4P/2005, and TIP4P/ice", Journal of Chemical Physics, 125 034503 (2006)
  3. J. L. Aragones, M. M. Conde, E. G. Noya and C. Vega, "The phase diagram of water at high pressures as obtained by computer simulations of the TIP4P/2005 model: the appearance of a plastic crystal phase", Physical Chemistry Chemical Physics, 11,543, (2009)
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