A quantum Drude oscillator model was developed by our group to describe excess electrons interacting with water clusters1. This approach uses quantum Drude-oscillators to account for polarization and dispersion interactions between the excess electron and the water molecules. In the present work, the quantum Drude model£¬combined with a modified Thole-type water model with dipole point polarizability, denoted DPP, is used to investigate the (H2O)7- cluster. Several low-energy isomers were characterized, and the finite-temperature properties of the cluster was investigated by means of parallel tempering Monte Carlo simulations
