NMR Studies of Quantum Rotors Confined in Zeolite

We report the results of NMR studies of methane trapped in zeolite at low temperatures. Samples were prepared to contain 1.0±0.2 molecules per α-sodalite cage of zeolite-13X. The NMR spin-spin and spin-lattice relaxation times were measured for 4spin-spin relaxation is seen at this “melting” transition.