Revisiting salicylidene-based anion receptors.

ABSTRACT: Several salicylidene-based colorimetric and fluorimetric anion sensors are known in the literature. However, our ¹H-NMR experimental results (in DMSO-d₆) showed hydrolysis of imine (-N[double bond, length as m-dash]CH-) bonds in salicylidene-based receptors (SL, CL1 and CL2) in the presence of quaternary ammonium salts (n-Bu₄N⁺) of halides (Cl^- and Br^-) and oxo-anions (H₂PO₄ ^-, HSO₄ ^- and CH₃COO^-). The mono-salicylidene compound CL1 showed the most extensive -N[double bond, length as m-dash]CH- bond hydrolysis in the presence of anions. In contrast, the di-salicylidene compound CL2 and the tris-salicylidene compound SL showed comparatively sl

SUBMITTER: Dey SK 

PROVIDER: S-EPMC9043535 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature