Syntheses and Crystal Structures of Two Novel Zinc( II ) Coordination Polymers

Two novel zinc(II) coordination polymers, [Zn3(μ3‐OH)2(nip)2] (1) and [Zn2(nip)2(4,4′‐bpy)3·(OH2)] (2) (H2nip = 5‐nitroisophthalic acid, 4,4′‐bpy = 4,4′‐bipyridyl), were obtained by the hydrothermal reactions of zinc nitrate, 5‐nitroisophthalate (nip) (for 1) and zinc nitrate, 5‐nitroisophthalate and 4,4′‐bipyridyl (for 2). Complex 1 displays a two‐dimensional structure that is built from [Zn3(μ3‐OH)2]n chains, while complex 2 is a three‐dimensional structure formed by the interpenetration of two‐dimensional hydrogen‐bonded bilayers. The photoluminescent properties of complex 1 have also been investigated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)