Formation and Decomposition of Transient Complexes with a Copper-Carbon-Bond in the Reaction of Copper(I)Phenanthroline with Aliphatic Free Radicals. A Pulse Radiolysis Study

Sara Goldstein, Gidon Czapski, Haim Cohen, Dan Meyerstein

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

23 اقتباسات (Scopus)

ملخص

The oxidation of copper(I) phenanthroline by CH2CH2OH and CH2C(CH3)2OH free radicals yields ethylene and 2-methylpropene, respectively. During this process transients with a copper-carbon σ-bond have been observed with an absorbance similar to that of copper(I) phenanthroline in the visible region. Rate constants for the formation of these transients are estimated to be larger than 1010M-1s-1. These intermediates decompose via a β-hydroxyl elimination reaction with specific rate constants of (1.7 ± 0.4) X 103and (1.1 ± 0.3) X 104s-1for CH2C(CH3)2OH and CH2CH2OH in the pH range 4-10, respectively. The mechanism of the decomposition is discussed, and a stability constant for the ligation of CH2C(CH3)2OH and CH2CH2OH to the cuprous complex is estimated to be larger than 6 X 106M-1.

اللغة الأصليةالإنجليزيّة
الصفحات (من إلى)4130-4135
عدد الصفحات6
دوريةInorganic Chemistry
مستوى الصوت27
رقم الإصدار23
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1 نوفمبر 1988
منشور خارجيًانعم

بصمة

أدرس بدقة موضوعات البحث “Formation and Decomposition of Transient Complexes with a Copper-Carbon-Bond in the Reaction of Copper(I)Phenanthroline with Aliphatic Free Radicals. A Pulse Radiolysis Study'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا