Structure and Dynamic Behavior of syn‐1,6‐Ethano‐8,13‐methano[14]annulene

Abstract
Detailed structural information is obtainable from 3J(H,H) values in unsaturated ring systems. Accurate analysis of the 400‐MHz 1H‐NMR spectrum of the title compound revelated a temperature‐dependent equilibrium between the double bond isomers (1)(2) (see previous communication).