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Intermolecular HgCl<jats:bold>\u22c5\u22c5\u22c5<\/jats:bold>HgCl (linear and \u03bc\u2010type) interactions in the solid state of the peripherally ArHgCl\u2010decorated compound <jats:bold>3<\/jats:bold> lead to a fascinating 3D supramolecular architecture. Compound\u2005<jats:bold>3<\/jats:bold> shows a selective fluorescence quenching response to picric acid and discriminates other nitroaromatic\u2010based explosives. For the first time, an electron\u2010deficient polyfunctional Lewis acid is shown to be useful for the selective detection and discrimination of nitroaromatic explosives. The Stern\u2013Volmer quenching constant and detection limits of compound\u2005<jats:bold>3<\/jats:bold> for picric acid are the best among the reported small\u2010molecular receptors for nitroaromatic explosives. The electronic structure, Lewis acidity, and selective sensing characteristics of <jats:bold>3<\/jats:bold> are well corroborated by DFT calculations.<\/jats:p>","DOI":"10.1002\/chem.201500727","type":"journal-article","created":{"date-parts":[[2015,5,7]],"date-time":"2015-05-07T08:28:19Z","timestamp":1430987299000},"page":"8874-8882","source":"Crossref","is-referenced-by-count":22,"title":["Polyfunctional Lewis Acids: Intriguing Solid\u2010State Structure and Selective Detection and Discrimination of Nitroaromatic Explosives"],"prefix":"10.1002","volume":"21","author":[{"given":"Chinna 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