Volume 24, Issue 10 pp. 1352-1358
Full Paper

Novel Hydrogen-bonded Three-dimensional Supramolecular Architectures Containing 2D Honeycomb Networks or 2D Grids

Dong-Sheng Li

Dong-Sheng Li

Department of Chemistry, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an, Shaanxi 710069, China

Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, Shaanxi 716000, China

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Cai-Hua Zhou

Cai-Hua Zhou

Department of Chemistry, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an, Shaanxi 710069, China

Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, Shaanxi 716000, China

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Yao-Yu Wang

Yao-Yu Wang

Tel.: 0086-29-88303097; Fax: 0086-29-88373398

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Feng Fu

Feng Fu

Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, Shaanxi 716000, China

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Ya-Pan Wu

Ya-Pan Wu

Department of Chemistry, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an, Shaanxi 710069, China

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Guang-Cai Qi

Guang-Cai Qi

Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, Shaanxi 716000, China

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Qi-Zhen Shi

Qi-Zhen Shi

Department of Chemistry, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an, Shaanxi 710069, China

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First published: 02 October 2006
Citations: 10

Abstract

Two new supramolecular complexes, [Cu(H2dhbd)(3-pyOH)(H2O)]2·3-pyOH·2H2O (1) and [Cu2(dhbd)(dpa)2- (H2O)]·6H2O (2) (H4dhbd=2,3-dihydroxybutanedioic acid, 3-pyOH=3-hydroxypyridine, dpa=2,2′-dipyridylamine), have been synthesized in aqueous solution and characterized by single-crystal X-ray diffraction, elemental analyses, UV-Vis and IR spectra, and TGA analysis. X-ray structural analysis revealed that, through four pairs of strong O···HO hydrogen bonds, the cyclic dinuclear units in 1 together with four adjacent neighbors are connected into a 2D honeycomb network encapsulating free 3-pyOH ligands. Unexpectedly, the water-dimers are fixed in interlayers of 2D honeycomb network and act as hydrogen-bond bridging to further extend these 2D networks into 3D hydrogen-bonded framework. Complex 2 includes interesting 2D grids constructed from chiral dinuclear units through strong O···HO and O···HN hydrogen bonding, which are extended through other crystallization water molecules into three dimension with channels. Variable-temperature magnetic susceptibility measurements for both complexes indicate the presence of weak antiferromagnetic exchange interactions between adjacent copper(II) ions.

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