NMR-STUDIES OF BOND-ORDERS

被引:20
作者
BARFIELD, M
COLLINS, MJ
GREADY, JE
HATTON, PM
STERNHELL, S
TANSEY, CW
机构
[1] UNIV SYDNEY,DEPT BIOCHEM,SYDNEY,NSW 2006,AUSTRALIA
[2] UNIV SYDNEY,DEPT ORGAN CHEM,SYDNEY,NSW 2006,AUSTRALIA
关键词
D O I
10.1351/pac199062030463
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Allylic/ortho—benzylic interproton coupling constants involving a methyl group, i.e. 4JMe-C==C-H henceforth designated as JoB, correlate well1with mobile bond-orders calculated in a number of ways in a representative series of hydrocarbons. Moreover, JoB is essentially independent of ring size and varies little with substituents in the conjugated systems studied2. Thus JoB appears to be a useful parameter for the study of mobile bond-orders and this work is concerned with applications to simple heterocyclic systems, biphenylene, 1,6-methano[10]annulene, azulene, quinones, the Mills-Nixon effect, fulvenes, porphyrins, sterically distorted benzenes, and electronically distorted benzene derivatives and heteroaromatics. © 1990, IUPAC.
引用
收藏
页码:463 / 466
页数:4
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