Abstract
The minimum-energy configurations and energetic properties of the ArN-CO2 (N = 1–19) van der Waals clusters were investigated by a simulated annealing algorithm. A newly developed Ar-CO2 potential energy surface together with the Aziz Ar-Ar interaction potential was employed to construct the high dimensional potential functions by pairwise additive approximation. The global minimal conformations were optimized by sampling the glassy phase space with a circumspectively formulated annealing schedule. Unlike the lighter RgN-CO2 clusters, the size-dependent structural and energetic characteristics of ArN-CO2 exhibit a different behavior. The dramatically variations with number of solvent were found for small clusters. After the completion of the first solvation shell at N = 17, the clusters were evolved more smoothly.
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