Schiff base bis(5-nitrosalycilaldehyde)ethylenediamine as colorimetric sensor for fluoride

Schiff base bis(5-nitrosalycilaldehyde)ethylenediamine as colorimetric sensor for fluoride Schiff bases are widely investigated to develop novel chemosensors for selective identification and determination of anions. In this communication, we have taken an old but novel Schiff base, bis(5-nitrosalycilaldehyde)ethylenediamine (5-NO2-Salen, L), as a receptor to investigate the binding interaction with different anions such as F−, I−, Cl−, and Br− using spectrophotometric and computational approaches. Addition of anions accelerated the tautomerization process of L. The enolimine form of L interacts through the phenolic-OH by intermolecular hydrogen bond that intensified the color of the receptor, and a significant hyperchromic shift was observed due to the fluoride anion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Schiff base bis(5-nitrosalycilaldehyde)ethylenediamine as colorimetric sensor for fluoride

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Publisher
Springer Journals
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1200-6
Publisher site
See Article on Publisher Site

Abstract

Schiff bases are widely investigated to develop novel chemosensors for selective identification and determination of anions. In this communication, we have taken an old but novel Schiff base, bis(5-nitrosalycilaldehyde)ethylenediamine (5-NO2-Salen, L), as a receptor to investigate the binding interaction with different anions such as F−, I−, Cl−, and Br− using spectrophotometric and computational approaches. Addition of anions accelerated the tautomerization process of L. The enolimine form of L interacts through the phenolic-OH by intermolecular hydrogen bond that intensified the color of the receptor, and a significant hyperchromic shift was observed due to the fluoride anion.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Apr 25, 2013

References

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