Qual È La Più Piccola Goccia D’acqua?

Abstract

This presentation will bring the reader on a journey across the micro-scopic world of water clusters. After a brief introduction about molecular spec-troscopy, I will show how the semiclassical approximation to quantum molecular dynamics allows for accurate full-dimensional quantum simulations of water cluster vibrational spectra, differently from classical molecular dynamics approaches. I will employ the semiclassical spectroscopy tool to determine the minimal network of sur-rounding water molecules needed to make the central one display the same vibra-tional features of liquid water. Remarkably, the minimal surrounding structure even-tually responsible for proper solvation is made of just a few water molecules and includes two complete solvation shells.