Abstract
Three new metal–organic frameworks, namely, [Cd1.5(tcpb)(DMF)(H2O)] (1), [Co1.5(tcpb)(DMF)2]·3DMF (2) and [Zn(Htcpb)(4,4′-bpy)0.5]·1.5H2O (3) (tcpb =1.3,5-tris(4-carbonylphenyloxy)benzene) have been synthesized by solvent-thermal method. The single-crystal X-ray diffraction analysis shows that compound 1 is 2D grid layers, with the trinuclear cadmium clusters acting as secondary building units (SBUs), and the tcpb ligand serveing as organic linkers. Compound 1 and Compound 2 are isomorphic structures containning similar connection modes of tcpb ligands with trinuclear metal clusters. Compound 3 is a 3D interpenetrated framework based on dinuclear Zn cluster with dia topology. The fluorescence properties for solid state compound 1 and 3 were examined at room temperature. Compared with free tcpb ligands, both of them display remarkable red-shift.
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