Progress in magnetic couple system of nitroxidemetal complexes
Baiwang Sun;Daizheng Liao;Zonghui Jiang;Genglin Wang;http://www.chinamagnets.biz
Metal-radical method is an effective approach to synthesizing magnetic molecular materials. With the development in decades, the study of nitroxide-metal complexes has made great progress in model, theoretical treatment and design of molecules. Several mechanisms of the metal-radical magnetic coupling are discussed. Molecular magnetic project of nitroxide-metal mmplutes has made fruitful achievements, but crystal magnetic project is difficult to be controlled, and it is a challenge to chemists. The studies on nitronyl nitroxide-metal complexes China magnets are summarized. At present, there are three major approaches to increasing theT c of the metal-radical compounds: (i) Searching for nitronyl nitroxide ligands that can yield 3-D ferroor femmagnetic structures; (II) decorating the structure of radicals with the aim to enhance the coordinate capability of radicals; (III) grafting polynitmxide radicals as a versatile bridge. The third approach, namely searching for polynitroxide ligand, will serve as a hopeful strategy for exploring higherT c radical molecule-based magnets.
