Stepwise construction of coordinative linkages and dynamic covalent linkages for a porous metal-organic framework.

A cyclic trinuclear complex is synthesized from Ag I and 1 H -pyrazole-4-carbaldehyde. Reticulation of the complex with 1,3,5-tris(4-aminophenyl)benzene through Schiff-base reaction affords a porous FDM-72 framework. Amine choice is systematically investigated as it may initiate metal reduction. This study proposes a new route and its amine selection criterion to synthesize Ag-based frameworks.