Solution‐Mediated Transformation of a 1D [Zn(Im)( HIm ) 2 ( OAc )] Precursor to Several Different 3D Zn(Im) 2 Frameworks

1D compound [Zn(Im)( HIm ) 2 ( OAc )] was used as a single precursor of metal and imidazole to prepare several 3‐dimensional ( 3D ) Zn(Im) 2 frameworks by solution‐mediated transformation. Specifically, three known topologies, zni, coi and crb ( BCT ) were obtained using a solution‐mediated transformation with CH 3 OH , DMF and DMA as solvent, respectively. Structural studies by 13 C MAS NMR spectroscopy and TG imply that in the transformation process from 1D compound to coi‐[Zn(Im) 2 ]•( DMF ) x and crb‐[Zn(Im) 2 ]•( DMA ) x ( ZIF ‐1), DMF and DMA solvent molecules acted as structure‐directing agent and, therefore, were occluded inside the framework, respectively. In contrast, in the formation of zni‐[Zn(Im) 2 ], no solvent molecules were present in the frameworks; therefore the transformation from 1D compound to zni was induced by temperature. Thus, solution‐mediated transformation of a single precursor ( 1D compound) approach was established for the synthesis of ZIFs .