Studies on singlet oxygen in aqueous solution. Part 1. Formation of singlet oxygen from hydrogen peroxide with two-electron oxidants
作者:Dennis F. Evans、Mark W. Upton
DOI:10.1039/dt9850001141
日期:——
N-chlorosuccinimide with H2O2 produce singlet oxygen in essentially quantitative yield. Iodylbenzene reacts with H2O2 to give, in the rate-determining step, iodosylbenzene and oxygen and then iodobenzene and oxygen; 47% of the oxygen produced is in the singlet state. For the corresponding reaction with 4-iodosylbenzene-1-sulphonic acid, the yield of singlet oxygen is 45%, i.e. indistinguishable within
动力学参数已报告为在水和氧化氘溶液中用蒽-9,10-双(乙烷磺酸盐)(aes)捕集单线态氧。的反应的动力学Ñ氯琥珀酰亚胺,氯胺T(Ñ -chlorotoluene- p磺酰胺),Ñ -chloromethanesulphonamide,和Ñ,Ñ -dichloromethanesulphonamide与过氧化氢进行了研究。对于氯胺T和N-氯甲烷磺酰胺,决定速率的步骤是形成相应的二氯化合物,它们是反应性物质。使用aes作为阱,表明氯胺T和带有H 2 O的N-氯代琥珀酰亚胺2产生单线态氧,基本上是定量的产量。碘代苯与H 2 O 2反应,在速率确定步骤中,生成碘代苯和氧气,然后生成碘代苯和氧气。产生的氧气中有47%处于单重态。对于与4-碘基苯-1-磺酸的相应反应,单线态氧的产率为45%,即在实验误差内无法区分。高碘酸盐和H 2 O 2产生单线态氧的产率较低,并且认为涉及两个伴随的过程。使用次溴酸盐和H