Charge Dependence of Temperature-Driven Phase Transitions of Molecular   Nanoclusters: Molecular Dynamics Simulation
  Phase transitions (liquid-solid, solid-solid) triggered by temperature changes are studied in free nanosized clusters of TeF_6 (SF_6) with different negative charges assigned to the fluorine atoms. Molecular dynamics simulations at constant energy show that the charge increase from q_F=0.1 e to q_F=0.25 e shifts the melting temperature towards higher values and some of the metastable solid states disappear. The increased repulsive interaction maintains the order in molecular systems at higher temperatures. 
S. Pisov and A. Proykova