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The anion binding properties bearing neutral cycle amine recognition sites

✍ Scribed by Xuefang Shang; Xiufang Xu

Publisher
Journal of Heterocyclic Chemistry
Year
2009
Tongue
English
Weight
143 KB
Volume
47
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

magnified image

O‐phenylene‐diamine derivative containing colorimetric dinitroquinoxaline has been synthesized. Its UV‐vis spectroscopy and ^1^H NMR investigation reveal that the receptor shows the strong binding ability for AcO^−^, F^−^, and H~2~PO, moderate binding abilities for OH^−^ and almost no binding abilities for Cl^−^, Br^−^, and I^−^. The interaction of the receptor with studied anions achieving the recognition of anions is proposed to come from the NH…F and potential CH…F hydrogen bonding in its neutral form. The results indicate that it is well suitable for the anion complexation, which is presumably contributed to its ring topology possessing a rigidity conjugation system. Moreover, the molecular orbital level of this receptor and its tautomer were further determined by means of theoretical investigations. J. Heterocyclic Chem., 2010.

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