A high rotational barrier for physisorbed hydrogen in an fcu-metal-organic framework

A combined inelastic neutron scattering (INS) and theoretical study of H-2 sorption in Y-FTZB, a recently reported metal-organic framework (MOF) with fcu topology, reveals that the strongest binding site in the MOF causes a high barrier to rotation on the sorbed H-2. This rotational barrier for H-2 is the highest yet of reported MOF materials based on physisorption.