Dinaphtho[2′,3′:5,6][1,4]dithiino[2,3-b:2,3-e]pyridine, its 16-butyl derivative and dinaphtho[2′,3′:5,6][1,4]dioxo[2,3-b:2,3-e]pyridine: novel heterocycles as electron donor compounds
作者:Carlos Troya、Albert Vidal、Enric Brillas、Jordi Rius、Xavier Torrelles、Carlos Alemán、Jordi Casanovas、Luis Juliá
DOI:10.1039/b202708a
日期:——
their radical cations with very similar potential peak values and a second irreversible wave to their dications, the lowest potential peak value of this second oxidation corresponding to 5. Their radical cations, generated by oxidation of the parent compounds, are relatively stable and have been analyzed in liquid solution by electron paramagnetic resonance (EPR). Spin density distributions in the
Dinaphtho [2',3':5,6] [1,4] dithiino [2,3- b:2,3- e ]吡啶(4a),其16丁基衍生物(4b)和dinaphtho [2' ,3':5,6] [1,4]二氧[2,3- b:2,3- e ]吡啶(5)已经制备并充分表征。通过循环伏安法在CH 2 Cl 2中研究了4a,4b和5的电化学性质。:三氟乙酸(1∶1); 根据它们的供体特征,它们对它们的自由基阳离子显示出第一个可逆的氧化波,其电势峰值非常相似,而对它们的指示则显示出第二个不可逆的波,该第二次氧化的最低电势峰值对应于5。由母体化合物氧化生成的自由基阳离子相对稳定,并已在液体溶液中通过电子顺磁共振(EPR)进行了分析。SOMO中的自旋密度分布已通过半经验MNDO方法进行了计算。在fluoro存在下,三氟乙酸中4a和4b的电子光谱分别显示在417和401 nm处的峰(III)三氟乙酸盐在两个特征峰λ最大为411和868纳米4A