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Proton-Conducting Hydrogen-Bonded 3D Frameworks of Imidazo-Pyridine-Based Coordination Complexes Containing
Abhijit Garai1, Anaparthi Ganesh Kumar2, Susanta Banerjee2
1Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-, 721302, India.
Abstract:
Coordination complexes of an olefinic molecule (PIP) containing pyridine and imidazopyridine moieties with ZnII /NiII metal salts were shown to exhibit appreciable proton conductivity. These complexes form 3D-hydrogen bonded frameworks containing rhomboidal channels that are occupied by uncoordinated 1,5-naphthalenedisulfonate (NDS). The extensive hydrogen bonding between the frameworks and NDS resulted in thermally stable and water-insoluble materials. Irrespective of the metal atom present, both complexes exhibited moderate to high proton conduction in the range of 10-5 to 0.5×10-3 S cm-1 depending on the temperature and humidity levels.
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