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A new three‐dimensional silver(I) coordination framework with a diamondoid topology constructed from 2‐(pyridin‐4‐yl)‐1H‐imidazole‐4,5‐dicarboxylic acid

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The title compound, poly[[μ4‐5‐carboxy‐4‐carboxylato‐2‐(pyridin‐4‐yl)‐1H‐imidazol‐1‐ido]disilver(I)], [Ag2(C10H5N3O4)] n , was synthesized by reacting silver nitrate with 2‐(pyridin‐4‐yl)‐1H‐imidazole‐4,5‐dicarboxylic acid (H3PyIDC) under hydrothermal conditions. The asymmetric unit contains two crystallographically independent AgI cations and one unique HPyIDC2− anion. Both AgI cations are three‐coordinated in distorted T‐shaped coordination geometries. One AgI cation is coordinated by one N and two O atoms from two HPyIDC2− anions, while the other is bonded to one O and two N atoms from two HPyIDC2− anions. It is interesting to note that the HPyIDC2− group acts as a μ4‐bridging ligand to link the AgI cations into a three‐dimensional framework, which can be simplified as a diamondoid topology. The thermal stability and photoluminescent properties of the title compound have also been studied.
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Document Type: Research Article

Affiliations: Zhongshan Supervision Testing Institute of Quality and Metrology, Zhongshan, Guangdong 528403, People's Republic of China

Publication date: May 15, 2013

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