Evaluation of the β Value of the Phenylene Unit by Probing Exchange Interaction between Two Nitroxides
作者:Kenji Higashiguchi、Koji Yumoto、Kenji Matsuda
DOI:10.1021/ol102339m
日期:2010.11.19
having two nitronyl nitroxide radicals were synthesized to investigate the decay constant of p-phenylene. By the measurement and simulation of the ESR spectra of the biradicals with different rod length, it was found that the exchange interaction was decreased with the decay constant β of 0.51 ± 0.01 Å−1. This result indicates that the spin−spin exchange interaction between neutralradicals has a decay