Substituent effects on ESR parameters of α-phenyl-N-tert-butylnitrone spin adducts. Resolution enhancement and mass spectrometry
作者:Kai Pan、Chiou-Rong Lin、Tong-Ing Ho
DOI:10.1002/mrc.1260310705
日期:1993.7
The combination of high‐performance liquid chromatography (HPLC) and ESR spectrometry was used to isolate the free radicals produced by the reaction of a Grignard reagent with 15 substituted α‐Phenyl‐N‐tert‐butylnitrone. Long‐range hyperfine splitting constants (hfsc) were obtained by the resolution enhancement method. Linear correlation studies between hfsc and Hammett σp constants are reported. Dual‐parameter
高效液相色谱 (HPLC) 和 ESR 光谱法相结合,用于分离格氏试剂与 15 取代的 α-苯基-N-叔丁基硝酮反应产生的自由基。通过分辨率增强方法获得长程超精细分裂常数(hfsc)。报告了 hfsc 和 Hammett σp 常数之间的线性相关性研究。还研究了使用 σR 和 σI 的双参数相关性。报告了 HPLC 分离的自旋加合物的质谱及其碎片模式。