Electron-transfer reactions of rhenium carbonyl radicals with N-methylpyridinium cations: application of Marcus-type relationships
作者:Michael R. Burke、Theodore L. Brown
DOI:10.1021/ja00196a027
日期:1989.7
radicals, Re(CO)sub 4}L* (L = PMesub 3} or P(O-i-Pr)sub 3}), generated via flash photolysis at 22degree}C of acetonitrile solutions of the corresponding dinuclear compounds, Resub 2}(CO)sub 8}Lsub 2}, are observed to undergo electron transfer to substituted N-methylpyridinium cations. Reaction rates were measured by observing the disappearance of the transient absorption due to Re(CO)sub 4}L* or
铼羰基自由基,Re(CO)sub 4}L* (L = PMesub 3} 或 P(Oi-Pr)sub 3}),通过在 22°}C 的乙腈溶液的闪光光解产生观察到相应的双核化合物 Resub 2}(CO)sub 8}Lsub 2} 发生电子转移到取代的 N-甲基吡啶鎓阳离子。通过观察由于Re(CO)sub 4}L* 引起的瞬时吸收的消失或由于产物吡啶基自由基引起的吸收的出现来测量反应速率。