Two-dimensional coordination polymers of Zn(II) and Cd(II) derived from 3,3′,5,5′-azobenzenetetracarboxylic acid exhibiting solvent facilitated structure reversibility |
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| Authors: | Anjian Lan Moothetty Padmanabhan Haohan Wu Maochun Hong |
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| Affiliation: | a Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
b Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China |
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| Abstract: | Two Cd(II) and Zn(II) coordination polymers based on 3,3′,5,5′-azobenzenetetracarboxylic acid (H4abtc): [Cd2(abtc)(H2O)6]·DMF·0.5H2O (1) and [Zn2(abtc)(bpy)(H2O)2]·DMF·H2O (2) are synthesized and structurally characterized. Both 1 and 2 are 2D polymers but interconnected by solvent molecules to generate 3D suprastructures. Solvent expulsion leads to rupture of both structures, but upon re-exposure to the solvent mixture they exhibit remarkable ability to regain the original structure reversibly from the almost amorphous solvent-expelled form. Compounds with such structural flexibility and reversibility are expected to have some useful functionality. |
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| Keywords: | Coordination polymer Zn(II) Cd(II) Tetracarboxylate Solvent facilitated structure reversibility |
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