Abstract

Three new coordination polymers, [Mn(L)(H2O)2]2·5H2O (1), [Cu(L)(4,4′-bipy)]2·H2O (2) and [Pb(L)(4,4′-bipy)0.5] (3) (H2L=5-(pyridin-4-yl)isophthalic acid; 4,4′-bipy=4,4′-bipyridine) have been synthesized and characterized by IR, thermogravimetric analysis, X-ray powder diffraction and X-ray single crystal diffraction. Complex 1 shows a 2D layer structure which stacks with the other ones to form 1D channels to hold 1D water chains. Complex 2 displays a 3D+3D→3D polycatenation network. 3 shows a unique 2D+2D→3D polycatenation net in which each Pb center has a hemidirected coordination geometry due to the existence of “inert pair effect”. The thermal and luminescent properties of 1–3 were also examined.

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