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Two new Ag(I) coordination polymers [Ag2(mepyz)](2,6-ndc)]n (1) and [Ag4(4,40-bipy)]4(2,6-ndc)2.8(H2O) (2) (where 2,6-ndcH2 = 2,6-napthalene dicarboxylic acid, mepyz = 2-methyl pyrazine and 4,40-bipy = 4,4'-bipyridine) have been synthesized and characterized\ud by single crystal X-ray diffraction analysis. Complex 1 displays a 2D rectangular grid architecture comprising\ud short Ag-Ag interactions, while 2 is a 1D coordination polymer: both enlarge their dimensionality to 3D via weak interactions. Luminescence study performed on complexes\ud as well on ligands shows metal perturbed intraligand CT\ud transition

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Reaction of thiodiglycolic acid and silver nitrate under ultrasonic condition forms a 3D supramolecular framework of silver with composition [Ag 2 (tdga)] n (1). X-ray single crystal structure analysis reveals repetition of paddle wheel units in the network. A weak Ag-Ag bond is present in the complex. A new l 8 -coordination mode of the thiodiglycolate ligand is identified. Photoluminescence and thermal characterization of the complex was examined.