J. Crossley, M. A. Mazid, C. McLellan
Mar 1, 1978
Citations
0
Influential Citations
9
Citations
Journal
Advances in Molecular Relaxation and Interaction Processes
Abstract
Abstract Relaxation of the acetyl group through an angle limited by steric hindrance has been observed in 2,4,6-trimethylacetophenone and in 9-acetylphenanthrene. The enthalpy of activation for this process is less than that in acetophenone. A similar type of motion is possible in 1-acetylnaphthalene but the overlapping absorptions due to group and molecular relaxations could not be separated by the technique employed. In 9-acetylanthracene only molecular relaxation appears to be detectable, indicating that any possible acetyl group relaxation in this compound may be limited to small angles.