Absolute Rate Expressions for Hydrogen Atom Abstraction from Molybdenum Hydrides by Carbon-Centered Radicals
作者:James A. Franz、John C. Linehan、Jerome C. Birnbaum、Kenneth W. Hicks、M. S. Alnajjar
DOI:10.1021/ja991412e
日期:1999.10.1
expressions for hydrogen atom abstraction by primary, secondary, and tertiary alkyl radicals in dodecane and benzyl radical in benzene from the molybdenum hydride Cp*Mo(CO)3H and for reactions of a primary alkyl radical with CpMo(CO)3H in dodecane are reported (Cp* = η5-pentamethylcyclopentadienyl, Cp = η5-cyclopentadienyl). Rate expressions for reaction of primary, secondary, and tertiary radical clocks with
十二烷中的伯、仲和叔烷基和苯中的苄基从氢化钼 Cp*Mo(CO)3H 和伯烷基与 CpMo(CO) 的反应中提取氢原子的一系列新基速率表达式报告了十二烷中的 )3H (Cp* = η5-五甲基环戊二烯基,Cp = η5-环戊二烯基)。一级、二级和三级自由基钟与 Cp*Mo(CO)3H 的反应速率表达式如下:对于 hex-5-enyl,log(k/M-1 s-1) = (9.27 ± 0.13) − (1.36±0.22)/θ,θ=2.303RT kcal/mol;对于hept-6-en-2-yl,log(k/M-1 s-1) = (9.12 ± 0.42) − (1.91 ± 0.74)/θ;对于 2-methylhept-6-en-2-yl,log(k/M-1 s-1) = (9.36 ± 0.18) − (3.19 ± 0.30)/θ(误差为 2σ)。由 hex-5-enyl 从 CpMo(CO)3H