Comparison of different three-site interaction potentials for liquid acetonitrile

Computer simulations of liquid acetonitrile at normal room conditions are reported. Both static and dynamic properties are analysed. Special attention is paid to the dielectric properties. A three-site interaction potential has been derived from ab initio calculations on the gas phase dimer acid a comparison with different three-site interaction potentials available in the literature is presented. The suitability of three-site models to reproduce the properties of the real liquid is discussed by comparing computer simulation results with experimental data.