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Two metal-organic frameworks (MOFs) with one-dimensional channels were successfully synthesized from the reactions of flexible paraffinic polycarboxylate with Zn(NO 3 ) 2 and CeCl 3 , respectivelyWith similar reaction conditions, reactions of the same organic ligand with different metals selected from different blocks (d-block and f-block) result in different coordination modes of carboxylate groups and final frameworks of 1 and 2. It is interesting that pores in 1 and 2 exhibit different behaviors to sodium cation, showing unique properties of MOFs based on flexible ligands.

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