EPR-investigations of radicals derived from diethyl iodomethylphosphonate in solid and liquid state
作者:Tomasz Bia?as、Aldona Szadowiak、Piotr Ba?czewski
DOI:10.1002/hc.10225
日期:——
A selective homolysis of the CI bond in diethyl iodomethylphosphonate to give the diethoxyphosphorylmethyl radical (EtO)2P(O)CH2· was observed in EPR spectra upon γ-irradiation and UV–vis photolysis. Analysis of stability of this radical was also investigated to show disappearance of EPR signals above 170–190 K. An attempt to observe this radical during the reaction with AIBN as an initiator failed
在 γ 辐射和紫外-可见光解的 EPR 光谱中观察到在二乙基碘甲基膦酸酯中的 CI 键选择性均裂得到二乙氧基磷酰甲基自由基 (EtO)2P(O)CH2·。还研究了该自由基的稳定性分析,以表明 EPR 信号在 170-190 K 以上消失。在与作为引发剂的 AIBN 反应期间观察该自由基的尝试失败了。© 2004 Wiley Periodicals, Inc. 杂原子化学 15:127–130, 2004; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.10225