Oxidation intermediates of borohydride and tetraphenylborate ions in aqueous solutions obtained by pulse radiolysis
作者:Hideo Horii、Setsuo Taniguchi
DOI:10.1039/c39860000915
日期:——
Absorption spectra of one-electron oxidized intermediates (the H4B· and the Ph4B· radicals) were observed upon the oxidation of H4B– and Ph4B– by the azide radical (N3·), Br2[graphic omitted], or (SCN)2[graphic omitted] in plus-irradiated solutions; the spectra have absorption maxima at 400 nm, ε= 1800 dm3 mol–1 for H4B· and at 335 nm, ε= 8600 dm3 mol–1 for cm–1 for Ph4B·.
通过叠氮化物基团(N 3 ·)Br 2 [ H 4 B –和Ph 4 B –的氧化,观察到单电子氧化中间体(H 4 B·和Ph 4 B·自由基)的吸收光谱。在正辐射溶液中,或(SCN)2 [在图形中省略];光谱的最大吸收在400 nm处,对于H 4 B·为1800 dm 3 mol –1,在335 nm对于Ph 4 B·为1厘米,对于8 cm -1为8600 dm 3 mol –1。