Abstract
trans-[Ni(pdm)2]2+ (pdm = 2-pyridinemethanol) proved to be a reliable synthon for the construction of isoreticular metal–organic frameworks (MOFs) of linear dicarboxylates, as exemplified by three one-dimensional (1D) MOFs [Ni(pdm)2(BDC)]n (1), [Ni(pdm)2(NDA)]n∙nDMF (2), and [Ni(pdm)2(ADC)]n (3) (H2BDC = 1,4-benzenedicarboxylic acid; H2NDA = naphthalene-2,6-dicarboxylic acid; H2ADC = 9,10-anthracenedicarboxylic acid; DMF = N,N-dimethylformamide) which shared identical connectivity. A dinuclear cluster [Ni2(pdm)4(HBTC)2]∙2DMF (4) was formed from tricarboxylate ligand BTC (H3BTC = benzene-1,3,5-tricarboxylic acid) with the two pdm ligands aligned cis to one other. Single-crystal structure analysis indicated that the 1D chains of 1 − 3 were stacked at different angles in the solid state, resulting in different crystal packing patterns, including a pseudo Kagome-like cross-section for 1, 1D channels for 2 with DMF guest species, and a non-porous structure for 3.
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