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Proton‐Conducting Hydrogen‐Bonded 3D Frameworks of Imidazo‐Pyridine‐Based Coordination Complexes Containing Naphthalene Disulfonates in Rhomboid Channels
Author(s) -
Garai Abhijit,
Kumar Anaparthi Ganesh,
Banerjee Susanta,
Biradha Kumar
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201901338
Subject(s) - pyridine , hydrogen bond , molecule , proton , chemistry , metal , naphthalene , hydrogen , crystallography , conductivity , polymer chemistry , medicinal chemistry , organic chemistry , physics , quantum mechanics
Coordination complexes of an olefinic molecule (PIP) containing pyridine and imidazopyridine moieties with Zn II /Ni II 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.