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A 2-D chiral entangled coordination polymer, {Mn3(2,2′-bpy)2(3-cpta)2·H2O}n (1) (3-H3cpta=3-(3′-carboxyphenoxy)phthalic acid, 2,2′-bpy=2,2′-bipyridine), has been synthesized via the solvothermal method. X-ray diffraction analysis reveals that 1 consists of one right-handed helical chain and one wavelike 2-D plane, which are connected with each other through hydrogen bonds and π···π interactions to generate a 3-D supra-molecule. Thermal gravimetric analysis shows that 1 possesses good thermal stability. Temperature dependent magnetic susceptibilities have also been measured from 1.8 to 300 K, which shows 1 to be anti-ferromagnetic. [ABSTRACT FROM AUTHOR]

Two new coordination polymers, [Pb(bpdc)] n (1) and [Co(bpdc)(phen)] n (2) [H2bpdc = benzophenone-2,4′-dicarboxylic acid, phen = 1,10-phenanthroline], have been synthesized and structurally characterized. Hydrogen bonding and π ··· π stacking extend 1 and 2 into 3-D supramolecular architectures, where 1 exhibits a 3-D framework with 1-D hairpin-like helicates based on Pb–O covalent bonds and 2 displays a 3-D network with 1-D zipper-like chains based on Co–O and Co–N covalent bonds. The FT-IR spectra, PXRD and TG analyses are discussed for 1 and 2. Fluorescence spectra and luminescent lifetime are studied for 1. [ABSTRACT FROM PUBLISHER]

A new coordination polymer, {[Ag(H3bptc)(bpe)] · 2H2O} n (1) (H4bptc = 3,3′,4,4′-benzophenonetetracarboxylic acid, bpe = 1,2-bis(4-pyridyl)ethene), has been synthesized through a hydrothermal technique and structurally characterized. The crystal structure of 1 exhibits a 2-D hydrogen-bonding sheet between H3bptc− and two free water molecules. Fluorescent property, TG analysis, and X-ray powder diffraction for 1 were also measured and discussed. [ABSTRACT FROM AUTHOR]

A porous coordination polymer based on nickel(II) and rigid multitopic ligands, {[Ni(dpdapt)(BDC)(H2O)] · 3.5H2O}n (1) (dpdapt = N, N'-di(2-pyridyl)-2,4-diamino-6-phenyl-1,3,5-triazine), has been synthesized and characterized. Compound 1 crystallizes in the space group C2/m and possesses a 3-D open framework with 1-D rhombic hydrophilic channels, in which hetero-chiral helical water chains are located. Two 1-D water chains are further stabilized by hydrogen-bonding interactions with the host, inducing a 10-oxygen ring propagated along the channel. TGA, PXRD analyses, and magnetic properties have also been studied. [ABSTRACT FROM AUTHOR]

A novel dysprosium(III) complex of N-(2-propionic acid)salicyloylhydrazone (H3L) and 2,2-dipyridyl (dipy) was prepared and characterized. The crystal structure of [Dy(H2L)(HL)(H2O)3] · 0.5dipy · 2H2O was determined by single-crystal X-ray diffraction methods. In the structure, Dy(III) is 9-coordinated by carboxyl O, acyl O atoms and azomethine N atoms of two ligands (H2L and HL forms) and O atoms from three water molecules. H2L and HL act as tridentate ligands, which form two stable five-numbered rings in the keto form, as indicated by the crystal structure and IR data. The coordination polyhedron around Dy(III) can be described as a monocapped square antiprism. A free 2,2-dipyridyl molecule and two water molecules are connected to coordinated water and ligands by hydrogen bonds to form a three-dimensional structural motif. The complex is highly fluorescent. [ABSTRACT FROM AUTHOR]