ChemInform Abstract: The Cations and Anions of Cyclobutanetetraone Poly(phenylhydrazones)

Autor:	Hassan S. El Khadem, M. Ashraf Shalaby, Bruce Coxon
Rok vydání:	2010
Předmět:	Chemistry Bathochromic shift Hypsochromic shift General Medicine Acid–base reaction Nuclear magnetic resonance spectroscopy Absorption (chemistry) Resonance (chemistry) Medicinal chemistry
Zdroj:	ChemInform. 32
ISSN:	1522-2667 0931-7597
Popis:	Six cyclobutanetetraone poly(arylhydrazones) have been treated with acids and bases, and the structures of the resulting anions and cations studied by UV-Vis 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 hypsochromic shifts; the others were unaltered.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e7e3964fba4bc82b800513bc0beb4113 https://doi.org/10.1002/chin.200143082 Zobrazit plný text záznamu Plný text