Conformational analysis of terphenyls by photoelectron spectroscopy.
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概要
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Vapor phase HeI photoelectron spectra of <I>o</I>- and <I>m</I>-terphenyl were measured, and conformational analysis of biphenyl, <I>o</I>-, <I>m</I>-, and <I>p</I>-terphenyl was made by comparing the observed photoelectron spectral patterns with the calculated ones by the CNDO/S method, the inter-ring twist angles in these compounds being estimated to be around 40°, 60°, 40°, and 40°, respectively. The result that the inter-ring twist angles in <I>o</I>-terphenyl are far smaller than 90° is completely in contrast to the long believed perpendicular model of <I>o</I>-terphenyl suggested by the gas electron diffraction study.
- 公益社団法人 日本化学会の論文
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