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Abstract: Via hydrothermal synthesis, the self-assembly of d10 metal, 2,4′-dipyridylamine (L) and 1,3-adamantanediacetic acid (H2ADA) generated two unprecedented coordination polymers [Zn(ADA)(L)] n (1) and [Cd(ADA)(L)2] n (2). Complex 1 possesses a novel 1D looped-chain topology structure decorated with arms. Complex 2 shows an extended threaded framework involving 2D coordination layers of square (44) topology with dangling ligands, which gives the novel (2D→3D) polythreaded array. To the best of our knowledge, complex 2 is the first example with four dangling arms coordinated in the axial sites of dinuclear nodes. In addition, both of the complexes show strong photoluminescence at room temperature, and may be good candidates for potential luminescence materials. [Copyright &y& Elsevier]

Abstract: Two new metal-organic frameworks, [M2(CTA)(bipy)1.5(H2O)2] n ·3n(H2O) (M=Cd for 1 and Mn for 2, H4CTA=cyclohexane-1,2,4,5-tetracarboxylic acid, bipy=4,4′-bipyridine) have been successfully synthesized and characterized. Complexes 1 and 2 are isostructural, which display unusual three-dimensional (3D) self-penetrating coordination frameworks with 3-nodal (3,5,5)-connectivity and the Schläfli symbol of (4,6,8)(42,67,8)(43,63,83,9). Moreover, in solid state, complex 1 exhibits blue emission at ambient temperature. Magnetic measurement shows that there exist weak antiferromagnetic interactions in 2. [Copyright &y& Elsevier]

The first use of H 4 nbtc ligand afford a novel 2D Cu(II) metal-cluster-based coordination polymer (MCCP), [Cu 4 (nbtc) 1.5 ( μ 3 -OH) 2 (H 2 O) 4 ·8H 2 O ( 1 ) (H 4 nbtc = 6,6′-dinitro-2,2′,4,4′-biphenyl tetracarboxylic acid), in which the boat- and chair-shaped tetranuclear cooper (II) clusters [Cu 4 ( μ 3 -OH) 2 ] 6+ coexist unprecedentedly. Interestingly, the chair-shaped Cu II 4 cluster-based 1D ladder chain perfectly threaded into the rectangle windows of the 2D grids constructed by boat-shaped Cu II 4 clusters and H 4 nbtc. And the magnetic property has also been investigated. [ABSTRACT FROM AUTHOR]

A new one-dimensional (1D) 4d–4f heterometallic coordination polymer [ErAg(Himdc)2(H2O)3] (1) (H3imdc=4,5-imidazoledicarboxylic acid) is synthesized under hydrothermal condition and characterized by elemental analysis, IR, PXRD and single crystal X-ray diffraction. Complex 1 crystallizes in the triclinic space group P-1, showing a 1D metal–organic pseudo-nanotube with a 4.014×12.027Å2 cross-section. Furthermore, it assembles into a 3D supramolecular architecture via hydrogen bonds between pseudo-nanotubes. The complex 1 exhibits solid-state photoluminescence and high thermal stability. [ABSTRACT FROM AUTHOR]

Abstract: A new three-dimensional terbium-carboxylate framework [Tb4L3(H2O)9]·7H2O (1) [(H4L=4,4′-(hexafluoroisopropylidene)diphthalic acid)] has been hydrothermally synthesized and structurally characterized. The framework contains Tb2 and Tb4 clusters, and exhibits an unprecedented 4-nodal (3,4,5,8)-connected topology. In addition, the thermogravimetric analysis, luminescent and magnetic properties were investigated. [Copyright &y& Elsevier]

Abstract: A new CdII-coordination polymer, namely, [Cd3(nbtc)2·4H2O] n (1), has been hydrothermally synthesized with in situ generated 5-nitrobenzene-1,2,3-tricarboxylate (nbtc3−) ligand. Single-crystal X-ray diffraction study reveals that compound 1 is constructed from trinuclear CdII clusters and exhibits a previously unknown 2D (3,4,9)-connected (3.42)(32.43.5)(36.411.510.68.8) topology as well as 3D H-bonding pillared architecture. In addition, the photoluminescent property and thermal stability of 1 were also discussed. [Copyright &y& Elsevier]

Abstract: Two novel 1D compounds {[Ag3(Hbptc)(bpa)2]·H2O} n (1) and [Ag2(H2bptc)(bpp)2] n (2) (H4bptc=3,3′,4,4′-benzophenonetetracarboxylic acid, bpa=1,2-bis(4-pyridyl)ethane and bpp=1,3-bis(4-pyridyl)propane) were synthesized and structurally characterized. The crystal structures of compounds exhibit two kinds of ladder-like chains based on linear or T-shaped coordination environment of Ag(I). Fluorescence spectra of compounds 1 and 2 indicate the unusual intensity of fluorescent emission upon photoexcitation which may be attributed to ligand-to-metal charge transfer and Ag–Ag interactions. [Copyright &y& Elsevier]

Abstract: A novel 2D coordination polymer, formulated as [Cd2(Hpimdc)2(bpp)(H2O)] n (bpp=1,3-bis(4-pyridyl)propane, H3pimdc=2-propyl-4,5-imidazoledicarboxylate), has been hydro-thermally synthesized and structurally characterized, which shows unusual multifarious helical structures and (3,4)-connected network with (4.82)2(42.83.10) topology. The photoluminescent property and thermal stability of 1 were also discussed. [Copyright &y& Elsevier]