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Two new three-dimensional metal–organic frameworks, [H2N(CH3)2]2[Zn(btec)]·DMF (1, H4btec=1,2,4,5-benzenetetracarboxylate acid) and [H2N(CH3)2][ZnLi(btec)]·DMF (2), have been solvothermally synthesized and structurally characterized by single crystal X-ray diffraction. Compound 1 based on μ4-btec features an anionic homometallic framework with 4-connected pts topology. Compound 2 is a heterometallic organic framework with rare (4, 4, 8)-connected network topology, which can be considered as constitute of a Li-btec (pts) net and a Zn-btec net. Moreover, the luminescent properties of two compounds are investigated in the solid state at room temperature. [ABSTRACT FROM AUTHOR]

In the title compound, [Zn2(SO3)2(C10H8N2)2], Zn2+ and SO32− form a dinuclear unit, with an inversion center at the mid-point of the Zn...Zn vector. Each Zn atom has distorted octahedral geometry and is coordinated by four O atoms from two SO32− anions and two N atoms of the 2,2′-bipyridine ligand. [ABSTRACT FROM AUTHOR]