Porous Metal−Organic Framework Based on μ₄-oxo Tetrazinc Clusters: Sorption and Guest-Dependent Luminescent Properties

A three-dimensional, highly porous metal−organic framework [Zn4O(bdc)(bpz)2]·4DMF·6H2O (1) (bdc = 1,4-benzenedicarboxylate, bpz = 3,3′,5,5′-tetramethyl-4,4′-bipyrazolate) constructed by Zn4O clusters with bdc and bpz linkers, has been prepared and structurally characterized. The N2 sorption measurements reveal that 1 exhibits high porosity with a Langmuir surface area of 1908 m2/g and a pore volume of 0.58 cm3/g. Compound 1 features hydrophobic channels with a free passage of ∼8.2 Å defined by the methyl groups from bpz, and it exhibits nice sorption capability for benzene and toluene and interesting two-step sorption behavior for methanol. Meanwhile, 1 also exhibits interesting guest-dependent luminescent properties.