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Heat capacities of mass selected deprotonated water clusters

Heat capacities of mass selected deprotonated water clusters (H2O)n−1OH− have been measured in the size range n = 48–118, as a function of temperature. We have found that they undergo a melting-like transition in the range 110–130 K. The transition temperature is size dependent with a strong correlation with the dissociation energy around the shell closure at n = 55.

Voir en ligne : J. Chem. Phys. 138, 034304 (2013)