Two corrugated 2D bilayer (63)(658) topological coordination polymers: Synthesis, structure, and water-induced reversible transformation

Two stable supramolecular microporous polymers with double-layer structures, [Co(AIP)(BPY)0.5 · H2O]n · 2nH2O (1) and [Ni(AIP)(BPY)0.5 · H2O]n · 2nH2O (2), were constructed from AIP (5-aminoisophthalate) and BPY (4,4′-bipyridine) under hydrothermal conditions. Both of them exhibit rarely reported (3,4)-connected (63)(658) topology and interesting water-induced reversible transformation properties that are confirmed by PXRD studies.