group X; the σp values for [graphic omitted]+ and [graphic omitted]+ rings have been calculated at +0.537 ± 0.005 and +0.57 ± 0.02 respectively. A second reduction process was also observed for both 1,2,3,5- and 1,3,2,4-dithiadiazolylium cations, indicative of the formation of the dithiadiazolide anion, [p-XC6H4[graphic omitted]]–; a preparative-scale reduction of (Ph[graphic omitted])2 using sodium amalgam
一系列对位取代的芳基二氮杂二唑盐[ p -XC 6 H 4 [省略的图形]] [Y](X = H,Me,CF 3,MeO,MeS,NO 2,F,Cl,Br,CN或[graphic省略] + ; Y = Cl或AsF 6)和[ p -XC 6 H 4 [图中省略]] [AsF 6 ](X = H,Me,CF 3,MeO,MeS,NO 2,F,Cl,Br或[省略的图形] +)已经准备好。既1,2,3,5-和1,3,2,4- dithiadiazolylium衍
生物的电
化学研究,作为六
氟砷酸盐(V)盐,表现出可逆的氧化还原行为,形成相应的二
噻二唑基。半波还原电位,È ½(红),为两种异构体dithiadiazolylium阳离子表明之间线性自由能关系Ë ½(红色)和哈米特值,σ p,对于取代基X; 的σ p为值[图形省略] +和[图形省略] +环具有在0.537±0.005和0.57分别±0.02计算的。还观察到了1