Preparation, crystal structure and properties of two novel metal-organic frameworks assembled from pyridine-3,5-dicarboxylic acid N-oxide

Two novel coordination polymers, [Cu(PDCO) · (H2O)]n(1) and [Cd(PDCO)(bipy) · (H2O) · 5H2O]n(2), (H2PDCO = pyridine-3,5-dicarboxylic acid N-oxide, bipy = 4,4′-bipyridine), have been synthesized under hydrothermal conditions, and their structures were determined by single-crystal X-ray diffraction studies. Polymer 1 features a three-dimensional (3D) network with nonequivalent nodes of (63)2(69 · 85 · 10) topology. Polymer 2 exhibits one-dimensional (1D) double-stranded chains. The magnetic character of 1 as well as the gas adsorption and luminescent properties of 2 have been investigated.

Two novel coordination compounds were constructed from pyridine-3,5-dicarboxylic acid N-oxide (H2PDCO). Compound 1 features a three-dimensional (3D) network with nonequivalent nodes of (63)2(69 · 85 · 10) topology. Compound 2 exhibits one-dimensional (1-D) double-stranded chains, which are further stacked to result in a 3D microporous network via strong hydrogen-bond and π–π interactions.Figure optionsDownload as PowerPoint slide