A CONFORMATIONAL STUDY OF BUTADIENE AND OF ITS HOMOLOGUES BY NMR SPECTROSCOPY

被引:69
作者
SEGRE, AL
ZETTA, L
DICORATO, A
机构
[1] Centro Nazionale, Chimica delle Macromolecole Sez. I. Milano
关键词
D O I
10.1016/0022-2852(69)90224-0
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
The NMR spectra of butadiene, of cis and trans pentadienes and of cis- and tran-t-butyl-butadienes were studied. The value of the coupling constant Js-vicinal varies with the temperature in butadiene and in its trans derivatives; it remains constant in the cis compounds. These results seem to indicate that in butadiene and in its trans-derivatives there is an equilibrium between a predominantly populated s-trans-conformation and a skewed conformation with the two double bonds not in the same plane. © 1969.
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页码:296 / &
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