Synthesis, electrochemical behavior and magnetic properties of polyradicals of the TTM series
作者:M. Castillo、E. Brillas、C. Rillo、M.D. Kuzmin、L. Juliá
DOI:10.1016/j.tet.2006.10.087
日期:2007.1
6-dichlorophenyl)bis(2,4,6-trichlorophenyl)methyl radical and a new hexafunctionalized radical of the TTM series, tris(3,5-dichloroformil-2,4,6-trichlorophenyl)methyl radical or its corresponding diamagnetic precursor 6 yield macromolecular heptaradical 3 and hexaradical 4, respectively, with high magnetic purity. Both solid polyradicals show stability in nitrogen at temperatures up to 300 °C and in solution
(4-氨基-2,6-二氯苯基)双(2,4,6-三氯苯基)甲基与TTM系列新的六官能化自由基tris(3,5-dichloroformil-2,4,6-之间的缩合反应三氯苯基)甲基自由基或其相应的抗磁性前体6产生大分子七面体3和六自由基4分别具有高的磁性纯度。两种固体多自由基在高达300°C的温度下在氮气中均表现出稳定性,并且在溶液中,其电子吸收率在数周内并未明显下降。两种多自由基在溶液中的EPR研究表明,未成对的电子是交换耦合的,在低温下,它们显示出弱的偶极自旋-自旋耦合。通过循环伏安法和差分脉冲伏安法分析了它们的电化学行为。七面体3在七电子两步过程中被还原,并在七电子一步过程中被氧化。