2H-NMR powder patterns of the deuterated benzene molecule trapped in a Cd(py)2{Ag(CN)2}2 host were measured in the temperature range of 123-403 K in order to obtain information about motional behavior of the guest benzene molecule undergoing an in-plane motion combined with an out-of-plane motion. The activation energy for the in-plane motion, which is a 60° jump among neighboring sites on the benzene ring, was derived to be 18.2(5) kJ mol-1 from the line-shape simulation of the 2H-NMR powder patterns. The jump frequency of the out-of-plane motion, which is a reorientation of the benzene ring between two sites separated with a 57.8° azimuthal angle, was in a fast motion region even at 123 K and the activation energy of the two-site jump is very low compared with that of the in-plane motion.