作者:Juan Pablo Saucedo-Vázquez、Víctor Manuel Ugalde-Saldívar、Alfredo Rubén Toscano、Peter M. H. Kroneck、Martha Elena Sosa-Torres
DOI:10.1021/ic8016968
日期:2009.2.2
rate equation, −d[(Fe(III)L3)3+]/dt = kEtO−[(Fe(III)L3)3+][EtO−], with kEtO− = 4.92 ± 0.01 × 104 M−1 s−1 (60 °C, μ = 0.01 M). The detection of general base catalysis and a primary kinetic isotope effect (kEtO−H/kEtO−D = 1.73) represents the first kinetic demonstration that the deprotonation becomes rate determining followed by electron transfer in the oxidative dehydrogenation mechanism. We also isolated
给出了胺[Fe(III)L 3 ] 3+(1),L 3 = 1,9-双(2'-吡啶基)-5-[(乙氧基)]铁促进的脱氢动力学和结构数据。-2''-吡啶基)甲基] -2,5,8-三氮杂壬烷。排除双氧的光谱和电化学实验有助于鉴定反应中间体和最终产物Fe(II)-单亚胺络合物[Fe(II)L 4 ] 2+(2),L 4 = 1,9-bis( 2'-吡啶基)-5-[(乙氧基-2''-吡啶基)甲基] -2,5,8-三氮杂-1-烯。2是由起始复合物的形成歧化1通过三步反应机理,很可能是通过以配体为中心的自由基中间体进行的。率法可以通过二阶速率方程,-d [(铁(III)L-描述3)3+ ] / d吨= ķ环氧乙烷- [(铁(III)L- 3)3+ ] [环氧乙烷- ],其中ķ环氧乙烷- = 4.92±0.01×10 4中号-1小号-1(60℃,μ= 0.01 M)。普通碱催化的检测和主要的动力学同位素效应(k