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STUDIES ON THE STRUCTURE OF FORKED CONJUGATIVE SYSTEMS——THE CONFORMATION OF 3-ACETYL-8-PHENYL-3,5,7-OCTATRIENONE-2

引用本文：	白春礼,傅亨,唐有祺.STUDIES ON THE STRUCTURE OF FORKED CONJUGATIVE SYSTEMS——THE CONFORMATION OF 3-ACETYL-8-PHENYL-3,5,7-OCTATRIENONE-2[J].中国科学B辑(英文版),1985(11).

作者姓名：	白春礼傅亨唐有祺

作者单位：	Institute of Chemistry，Aoademia Sinica，Beijing，Institute of Chemistry，Aoademia Sinica，Beijing，Institute of Chemistry，Aoademia Sinica，Beijing

摘要：	The conformational properties of the title molecule in the isolated state have been investigated by the PCILO method and compared with those found from X-ray crystallographic determination. The results indicate that, in this type of forked conjugative series, because of steric hindrance, only one branch of the forking groups is basically coplanar with the conjugated trunk chain and plays the role of a terminal group, while the other one is not coplanar with the conjugated trunk chain and acts as an ordinary substitutent. Referring to the phenyl group, the acetyl group on the different sides of ethylenic chain exhibits the properties of a terminal group.
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