Scaled Particle-Quasilattice Model of Liquid Water

A quasilattice model for liquid water is formulated which in first approximation is based on the ice VII and ice $\mathrm{I}c$ structures. Values of the work required to create a molecular vacancy are computed from the observed density and scaled particle theory of liquids. The isothermal compressibility of water is computed and is in good agreement with experiment. A modified Stokes-Einstein relation for the nuclear relaxation time is shown to give good agreement with recent deuteron relaxation data.