Fig. 3: Reversible structural switching between 1 and 2.

a Photographs of a single crystal of 1 exposed over time to dimethylacetamide (DMA) vapor. b Single-crystal structures of 1 (left) and of 2 (right) showing how exposure to DMA and methanol can facilitate interconversion between the two structures. Solvent molecules have been omitted for clarity. c Simulated and experimental powder XRD scans of bulk samples of 1 and 2 used to demonstrate reversible conversion between the MOF structures.