▎ 摘　　要

Molecular hydrogen is well-known for its weak van der Waals potential, and as a result, its compressibility, even in its liquid and solid state. This fact gives rise to a large pDeltaV term, which under the right conditions can overcome unfavorable energy and entropy changes for the confinement of H-2, as demonstrated for the confinement of H-2 in graphite. It produces a remarkable two dimensional array of H-2 with ordered orientation, as H-2 is forced into the narrow and seemingly inhospitable space sandwiched between two hexagonal carbon rings. H-2 is thus a unique case in host-guest interaction and in the storage and confinement of gases, as pressure in the gigapascal range provides a powerful variable to manipulate the interaction between H-2 and solid hosts.