Electron spin resonance spectroscopy, stability and spin-probe properties of dithiazolyl, dithiadiazolyl, benzodithiazolyl and disulphenimidyl free radicals
作者:Stephen R. Harrison、Roger S. Pilkington、Leslie H. Sutcliffe
DOI:10.1039/f19848000669
日期:——
4-dithiadiazol-2-yl, 1,3,2-benzodithiazol-2-yl and dibenzenesulphenimidyl free radicals, both in solution and in rigid matrices. The powder spectra were analysed to give values for the anisotropic g-factors and hyperfine coupling constants, and, in turn, these results were used by means of a simple e.s.r. tumbling theory to calculate radical radii from low-temperature fluid e.s.r. spectra. A simple correction
对1,3,2-二噻唑-2-基,1,3,2,4-二噻二唑-2-基,1,3,2-苯并噻唑-2-基和二苯磺酰亚氨基的esr光谱进行了比较研究。溶液和刚性基质中的自由基。分析粉末光谱以给出各向异性g因子和超精细偶合常数的值,然后,这些结果通过简单的esr翻滚理论用于根据低温流体esr光谱计算自由基半径。一个简单的校正被纳入该理论,以包括“滑动”旋转的贡献。氮各向同性偶合常数的值为自由基的电子和空间结构提供了有用的指导。结果表明,1,3,2-二噻唑-2-基具有最大的自旋探针潜力。