Nuclear quadrupole resonance study of .BETA.-chloroisocrotonic acid.
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概要
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<SUP>35</SUP>Cl nuclear quadrupole resonance frequencies have been measured in powders of β-chlorocrotonic acid, and β-chloroisocrotonic acid to be 34.966 and 34.261 MHz, respectively, at 78 K. Zeeman effect experiments were conducted on a single crystal of β-chloroisocrotonic acid and the asymmetry parameter of the electric field gradient has been determined to be 0.174±0.016 at 78 K. The π-electron density on the chlorine site has been estimated from the asymmetry parameter according to Bersohn and discussed on the basis of the semi-empirical Pariser-Parr-Pople molecular orbital treatment.
- 公益社団法人 日本化学会の論文
著者
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Nakamura Nobuo
Department Of Cardiology Seiyu Memorial Hospital
-
Chihara Hideaki
Department Of Chemistr Faculty Of Science Osaka University
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Ichimura Kiyoshi
Department of Chemistry, Faculty of Science, Osaka University
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