Our conceived approach based on the directed assembly of functional metal–organic squares (MOSs), 4-membered ring (4MR) building units, permitted the construction of two novel zeolite-like supramolecular assemblies (ZSAs), namely [Co4(ImDC)4(En)4]⋅9 H2O⋅1.5 DMF (ZSA-10) and [Co4(ImDC)4(En)4]⋅7 H2O (ZSA-11) (H3ImDC=4,5-imidazoledicarboxylic acid, En=ethylenediamine, DMF=N,N-dimethylformamide). The elected MOSs encompass both trans- and cis-coordinated nodes, offering complementary peripheral functional groups for their directed assembly into zeolite-like topologies via supramolecular hydrogen bonding interactions. Distinctly, ZSA-10 possesses the underling MER zeolite topology and is the only pure MER framework material (without any supporting templates) exhibiting permanent porosity up to now. ZSA-11 has the underlying ABW topology together with one type of narrow channel.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21771078, 21671074, and 21621001), the 111 Project (B17020), the National Key Research and Development Program of China (2016YFB0701100). The authors also gratefully acknowledge financial support from King Abdullah University of Science and Technology (KAUST).