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Abstract: Reactions of different metal salts with 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole (3-abpt) gave rise to five new complexes, namely [Cu4(CN)4(3-abpt)2] n (1), [CuBr(3-abpt)] n (2), [CuI(3-abpt)] n (3), [Cu3I3(3-abpt)] n (4) and [Cu(3-abpt)(SO4)(H2O)] n (5). Compounds 1, 3, 4 and 5 are all 2D structures. Compound 1 is a double-layered polymer with an uncommon 3-nodal 3-connected (103)(102.4)4 network, 3 shows a 2D square layered structure, 4 is also a double-layered polymer with 2-nodal 4-connected (3.4.5.62.7)2(3.42.52.7) network and 5 is a 2D structure which is ultimately stacked with an ABAB repeat pattern. Compound 2 is a 1D coordination polymer which exhibits a ladder-like network. The photoluminescence of 1–2 has also been investigated. The long emission lifetimes of 1–2 could be assigned to metal-to-ligand charge transfer triple excited states [MLCT]. [Copyright &y& Elsevier]

Abstract: Reactions of metal acetates with 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole (3-abpt) and co-ligands gave rise to four new complexes, namely [Zn2(3-abpt)(beta)(DMF) (H2O)2] n ·nH2O (1), [Zn(3-abpt)(ip)] n ·3nH2O (2), [Zn(3-abpt)(ip)(H2O)2] n ·2nH2O (3), and [Cu2(3-abpt)2(C6H5COO)4(H2O)2] n ·2nH2O (4) (ip=isophthalate, beta=1,2,4,5-benzenetetracarboxylate). Compound 1 is a 3D coordination polymer with uncommon 3,4-connected (62.8)2(62.82.102) network. Compounds 2–4 are all 1D coordination polymers, which exhibit diversity structures. Compound 2 is a tubular-like chain, 3 is a ring-like network, and 4 is a zigzag chain. Their thermal stabilities and the photoluminescence of 1 have also been investigated. [Copyright &y& Elsevier]