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UV absorption cross-sections of a series of vinyl ethers

 
: Nieto-Gligorovski, L.I.; Gligorovski, S.; Romano, R.; Della Vedova, C.; Zetzsch, C.

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Preprint urn:nbn:de:0011-n-947024 (932 KByte PDF)
MD5 Fingerprint: df063c6e01cf582d8c03b73e4bd6abd1
Created on: 23.9.2010


Journal of photochemistry and photobiology. A, Chemistry 204 (2009), No.1, pp.46-51
ISSN: 1010-6030
English
Journal Article, Electronic Publication
Fraunhofer ITEM ()
vinyl ether; absorption cross-section; oscillator strength; O-17 NMR-spectra; ultraviolet-absorption; rate coefficient; radical; Olefin; rate constant; kinetic; OH radical; gas phase; photoabsorption; oxidation

Abstract
UV absorption cross-sections of six vinyl ethers (ethyl vinyl ether, 1,4-butanediol divinyl ether, isobutyl vinyl ether, cyclohexyl vinyl ether, 4-hydroxybutylvinyl ether and diethyleneglycol divinyl ether) have been determined in the gas phase between 190 and 230 nm at 303 +/- 2 K and pressures up to the corresponding saturation vapor pressures. The main band maxima of the vinyl ethers are below 200 nm with values under 8 x 10(-17) cm(2) molecule(-1). The absorption vanishes above 225 nm with values of (T smaller than 1 x 10(-11) cm(2) molecule(-1). Weak, overlaying vibrational progressions with spacings of 1400 cm(-1) are observed for the alkyl vinyl ethers and are less pronounced for vinyl ethers with an extra O atom. Shifts of the positions and intensities are discussed on the basis of the differences in the chemical structure of this series.

: http://publica.fraunhofer.de/documents/N-94702.html