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Solvothermal syntheses afforded two new MOFs {[Zn2(L1)(btmbb)(H2O)4]·2H2O}n (1) and [Zn2(L1)(btmbb)2]n (2) [5,5′-(1,4-phenylenebis(methylene))bis(oxy)diisophthalic acid (H4L1), and 4,4′-bis((1H-1,2,4-triazol-1-yl)methyl)biphenyl (btmbb)]. Single crystal X-ray analyses reveal that compound 1 shows an example of a 2D non-interpenetrating network, while compound 2 is a 2D polythreading interpenetrating structure, in which two layered networks interpenetrate in a (2D/2D) parallel fashion. The different conformation of the flexible ligand might be the main factor resulting in these non-interpenetrated/interpenetrated structures. The powder X-ray diffraction, thermal stabilities, and the photoluminescence of 1–2 have also been investigated. [ABSTRACT FROM AUTHOR]

In order to tune the Zn(II) coordinationpolymer architectures,three position isomers, 1,4- (pbtmb), 1,3- (mbtmb), and 1,2-bis(1,2,4-triazol-1-ylmethyl)benzene(obtmb), and flexible tetracarboxylate ligand, 5,5′-(1,4-phenylenebis(methylene))bis(oxy)diisophthalicacid (H4L1), were used to assemble compounds with different kindsof entangled networks, namely, {[Zn2(L1)(pbtmb)2]·4H2O}n(1), {[Zn2(L1)(mbtmb)2]·4H2O}n(2), and [Zn2(L1)(obtmb)2]n(3). Flexible bis(triazole) ligands present diverseconformations in these compounds. Compound 1shows a4-fold interpenetrating three-dimensional architecture with 4-connectedmog (moganite) topology. Compound 2displays a 2D + 2D→ 3D polycatenation network simplified as new 4-connected topologywith the Schlafli notation of {4,64;8}2{42,64}. Compound 3is a 2D polythreadingstructure, in which two layed networks interpenetrate in a (2D/2D)parallel fashion. The powder X-ray diffraction, thermal stabilities,and the photoluminescence of 1–3havealso been investigated. [ABSTRACT FROM AUTHOR]

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: Two novel three-dimensional (3D) coordination polymers (1) and ·nH2O (2) (mtta=5-methyltetrazolate, trz=1,2,4-triazole) were synthesized and structurally characterized. Complex 1 shows a 3D porous metal–organic framework. By the topology analysis, the complicated architecture of 1 can be simplified to be the 4-connected diamond-type net. Compound 2 is a two-fold interpenetrating 3,5-connected 3D framework with new topology. [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]

Abstract: Two new azide complexes, [Cd2(3-abpt)(N3)4] n (1) and [Cu(3-abpt)2(N3)2] (2) (3-abpt = 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole), have been prepared and structurally characterized. Complex 1 displays an interesting 2D polymeric structure with rarely reported 3,7-connected (32;4)(34;46;56;65) network in the Schafli notation. Complex 2 contains mononuclear pieces, and they are linked each other through weak Cu⋯N coordination bonds to form a 2D sheet with (4,4) topology. The thermal stability and fluorescent property of 1 have also been investigated. [Copyright &y& Elsevier]