Electron Spin Resonance of some Nitroxide Free Radicals. Nitroxide from Homopiperazine and Dodecamethyleneimine

Chemistry Department, College of Science, University of Baghdad, Jadiria, Baghdad, Iraq Manuscript received 2 February 1987, accepted 1 June 1988 Nitroxide free radicals from homopiperazine and dodecamethyleneimine have been prepared and their esr spectra reported. Linewidth alternation due to conformational interconversion is observed in the homopiperazine case, while in case of the nitroxide from dodecamethyleneimine the spectrum was not well-resolved at room temperature, but nitrogen and hydrogen splitt­ings were measureable at 70°