Nuclear Magnetic Resonance Study of Ring Inversion in Cycloheptene

1971 ◽  
Vol 49 (8) ◽  
pp. 1256-1261 ◽  
Author(s):  
Maurice St-Jacques ◽  
Cambyse Vaziri

The p.m.r. spectrum of 4,4,5,6,6-pentadeuteriocycloheptene (3) has been studied down to −171 °C. Analysis of the spectral change below −160 °C yielded a ΔF≠ value of 5.0 kcal/mol at −165 °C. Possible energy profiles for the ring inversion of cycloheptene are discussed.








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