ARKIVOC

Synthesis and structural characterization of a stable betaine imino-nitroxide free diradical

A Paun, I Zarafu, MT Caproiu, P Ionita

Index: Paun, Anca; Zarafu, Irina; Caproiu, Miron T.; Ionita, Petre Arkivoc, 2013 , vol. 2013, # 4 p. 144 - 151

Full Text: HTML

Citation Number: 0

Abstract

Abstract Starting from ready available compounds, a stable diradical of imino-nitroxide type has been synthesized in a multistep process. Structural characterization of the intermediates and final product included 1 H-and 13 C-NMR, elemental analysis, IR, UV-Vis and EPR spectroscopy. The stable diradical contains also a betaine structure with extended conjugation, which is responsible for its intense colour. Reduction of the stable betaine ...