Mechanosynthesis of Second‐Sphere Coordination Salts and Chelating Complexes: Structures, Reversible Transformations, and Nitroaromatic Explosives Sensing

Abstract

We have investigated the mechanosynthesis of a series of second-sphere salts (guest⊂ [H2L]2+*[MCl4]2−) and the reversible transformations with their chelating coordination complexes [MCl2(L)], via dehydrochlorination reaction, L = N,N′-dibenzyl-(±)-trans-1,2-diaminocyclohexane. The second-sphere salts and their corresponding coordination complexes show different solid state fluorescence spectra. The complex (ZnCl2)(L)(2′) can act as a fluorescent sensor for highly sensitive detection of nitroaromatic compounds through fluorescence quenching.