The benzene...Ar-n (n = 3-5) clusters were studied by constant-energy molecular dynamics simulations using the ab initio intermolecular potential for the benzene...Ar interaction. The relative populations of energetically less favorable two-sided structures were found to be higher than the populations of one-sided isomers for all the clusters under study. The highest temperature at which the cluster can exist for a reasonable time interval (1 ns) is about 50 K for all the clusters investigated.