Fig. 3: Radial distribution functions (RDFs) between the oxygen atoms of the water molecules in different MOFs.

For each framework, a gradient colour scale is used to indicate the water loading in the unit cell. The O--O RDF of bulk water is indicated with a grey dashed line. The insets for UiO-66 and MOF-801 (labelled 1--3) show the contributions of representative O--O pairs to the second peak of the RDF. The inset for UiO-67 shows the bulk-like shell structure in the octahedral pore.