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The Cations and Anions of Cyclobutanetetraone Poly(Phenylhydrazones)

Published

Author(s)

H S. El Khadem, M A. Shalaby, B Coxon

Abstract

Six cyclobutanetetraone poly (arylhydrazones) have been treated with acids and bases, and the structures of the resulting anions and cations studied by UV/visible absorption and NMR spectroscopy. In acid media, all the hydrazones studied formed cations, which exhibited bathochromic shifts due to the extension of their resonance systems. However, in bases, only some (those which could enolize) formed anions that exhibited bypsochromic shifts; the others were unaltered.
Citation
Carbohydrate Research
Volume
334
Issue
No. 1

Keywords

anions, bathochromic, cations, cyclobutanetetraone poly (phenylhydrazon, enolization, hypsochromic shift, NMR spectroscopy, ultraviolet/visible spectrophotometry

Citation

El, H. , Shalaby, M. and Coxon, B. (2002), The Cations and Anions of Cyclobutanetetraone Poly(Phenylhydrazones), Carbohydrate Research (Accessed April 20, 2024)
Created August 1, 2002, Updated February 19, 2017