Spin Exchange Interaction through Phenylene-Ethynylene Bridge in Diradicals Based on Iminonitroxide and Nitronylnitroxide Radical Derivatives. 1. Experimental Investigation of the Through-Bond Spin Exchange Coupling
作者:Pascale Wautelet、Jacques Le Moigne、Vladimira Videva、Philippe Turek
DOI:10.1021/jo034723n
日期:2003.10.1
pi-conjugation on the intramolecular through-bond spincoupling have been investigated by changing the length of the spacer within linear derivatives. The EPR studies demonstrate the intramolecular magnetic coupling between the radicalspins within all compounds. This result is very attractive and unusual, given the large distance between the radicals from 15 A in the dimer to 36 A in the pentamer.