作者:David A. Shultz、Gary T. Farmer
DOI:10.1021/jo980562p
日期:1998.9.1
The synthesis and characterization of an anion biradical, 1(-)(*)(*), composed of semiquinone and nitroxide functionalities is described. The biradical was prepared by reduction of the nitroxide-orthoquinone precursor using both electrochemical and chemical methods. The zero-field-splitting parameter, |D/hc|, for 1(-)(*)(*) is consistent with the proposed electronic structure, based on a comparison
描述了由半醌和一氧化氮官能团组成的阴离子双自由基1(-)(*)(*)的合成和表征。通过使用电化学和化学方法还原硝基氧-邻醌前体来制备双自由基。基于与| D / hc |的比较,用于1(-)(*)(*)的零场分裂参数| D / hc |与所提出的电子结构一致。相关的双基。最后,可变温度EPR光谱的结果与两个未配对电子通过间亚苯基的铁磁(高自旋)耦合相一致。