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A silver(I) coordination polymer, [Ag2(bpdc)]n (1) (H2bpdc = 2,2'-bipyridyl-3,3'-dicarboxylic acid), has been synthesized and characterized. Compound 1 exhibits a 2-D network containing 1-D channels. Each (bpdc)2- is an octadentate μ6-1igand coordinating with six Ag(I)'s in 1. This coordination of (bpdc)2- ligand is first observed here. Neighboring networks are arranged in a [ABAB···] pattern to form 3-D supramolecular architecture by π···π stacking. Compound 1 shows intense photoluminescence at room temperature. [ABSTRACT FROM AUTHOR]

Two metal-organic coordination polymers, [Cd(HIDC)(pytpy)] (1) and [Zn(HIDC)(pytpy)] · (H2O) (2), have been synthesized by reactions of 4'-(3-pyridyl)-2,2' : 6',2''-terpyridine (pytpy), 4,5-imidazoledicarboxylic acid (H3IDC) with CdCl2 · 2.5H2O and ZnCl2, respectively, in the presence of base. Compound 1 is a one-dimensional (1-D) helical chain with the chains extended into a three-dimensional supramolecular network through two different π ··· π interactions from pytpy ligands. Compound 2 is also a 1-D helical chain and adjacent chains are packed into a 2-D layer through π ··· π interactions between terminal pyridyl and pendant pyridyl rings from pytpy ligands. The photoluminescent properties of the two compounds are also investigated. [ABSTRACT FROM AUTHOR]