Influence of Vinyl Groups on the UV-Visible Spectra and Self-Dimerization of Pyrromethenones
作者:
Meiqiang Xie,
DavidA. Lightner,
期刊:
Spectroscopy Letters
(Taylor Available online 1992)
卷期:
Volume 25,
issue 7
页码: 1057-1066
ISSN:0038-7010
年代: 1992
DOI:10.1080/00387019208018215
出版商: Taylor & Francis Group
关键词: Vinyl(iso)neoxanthobilirubic acid methyl ester;Bilirubin;UV-Visible
数据来源: Taylor
摘要:
Spectral analyses of vinylneoxantho- and vinylisoneoxanthobilirubic acid methyl esters, withendoandexo-vinyl groups respectively, show that theexo-vinyl group causes (1) a greater bathochromic and hyperchromic shift of the long wavelength UV-vis absorption and (2) a smaller dimer association constant in CDCl3than does theendo-vinyl in these pyrromethenones.
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