Synthesis and characterisation of some novel hetero-diradicals containing linked hydrazyl and aminoxyl (nitroxide) moieties
作者:Petre Ionita、Adrian C. Whitwood、Bruce C. Gilbert
DOI:10.1039/b102748b
日期:——
We report the synthesis and characterisation of some novel hydrazine-derived monoradicals incorporating nitroxide 14, nitronyl-nitroxide15 and imino-nitroxide 16 functions, as well as the corresponding diradicals assigned the hydrazyl-nitroxide 17, hydrazyl-nitronyl-nitroxide 18 and hydrazyl-imino-nitroxide 19 structures. EPR, UV-Vis and electrochemical (CV) characteristics are reported, along with MS and NMR data where appropriate; pKa and BDE values are calculated as well as the average interelectronic separation in the triplet diradicals 18 and 19 obtained via solid-state
EPR measurement and calculations. The reactions of these compounds with short-lived radicals generated by photolysis, as well with NO and NO2, are also reported.
我们报告了一些新型肼基单卤化物的合成和特性,这些单卤化物具有硝基氧化物 14、硝酰基硝基氧化物 15 和亚氨基硝基氧化物 16 的功能,以及相应的二卤化物,即肼基硝基氧化物 17、肼基硝酰基硝基氧化物 18 和肼基亚氨基硝基氧化物 19 结构。报告了 EPR、UV-Vis 和电化学 (CV) 特性,并酌情提供了 MS 和 NMR 数据;计算了 pKa 和 BDE 值,以及通过固态 EPR 测量和计算获得的三重二元化合物 18 和 19 的平均电子间分离度。还报告了这些化合物与光解产生的短寿命自由基以及 NO 和 NO2 的反应。