Contents of molecular complexes in gas phase at higher pressures: a case study of (H 2O) 2(g)

Abstract

The contents of weak molecular complexes have been analysed in equilibrium gaseous mixtures at high pressures, particularly in the region above the critical temperature, and have been illustrated with the water dimer using the most precise quantum-chemical data on the thermodynamics of its formation. The temperature decrease in stability can be overcompensated by the pressure. The competition action of formation of higher clusters has been studied with the model of water vapour composed of oligomers up to (and including) the pentamers.