𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Rate constants for concurring radical reactions in solution obtained by kinetic electron spin resonance

✍ Scribed by K. Münger; H. Fischer

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
604 KB
Volume
16
Category
Article
ISSN
0538-8066

No coin nor oath required. For personal study only.

✦ Synopsis

It is shown how kinetic electron spin resonance spectroscopy with intermittent radical generation can be used to obtain rate constants of various simultaneous reactions in systems containing more than one kind of transient radicals. The technique is applied to reactions of tert-butyl [(CH, )& and isopropylol [(CH,),COH] radicals generated by photolysis of di-tert-butyl ketone and acetone in 2-propanol/acetone mixtures. It yields the rates of generation of the two radicals, the rate constants for their self-and crossterminations and for the reaction of tert-butyl with 2-propanol. The extent of diffusion control of the termination constants is discussed. * ~G E R AND FISCHER (1) d[R,l/dt = I , (t> -2kt [R,12 -CktJ [R,l [RJl J -Ck" [R,] + C k J ' [R,] J

📜 SIMILAR VOLUMES

Rate constants for the decarboxylation o
Rate constants for the decarboxylation of the t-butoxicarbonyl radical and concurring radical terminations directly obtained by kinetic ESR
✍ D. Rüegge; H. Fischer 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 723 KB

Rate constants of various simultaneous reactions of t-butoxicarbonyl and t-butyl radicals generated by photolysis of t-butylpivalate in n-heptane are directly determined by kinetic electron spin resonance. The temperature dependence of the decarboxylation reaction t-BuOCO + t-Bu + CO, obeys log(k/s-

Rate constants for self- and cross termi
Rate constants for self- and cross terminations of transient radicals in solution by effect modulated electron spin resonance spectroscopy
✍ H. Paul; C. Segaud 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 512 KB

## Abstract It is shown how electron spin resonance spectroscopy with modulated radical initiation can be used to analyze by purely spectroscopic means the second‐order termination kinetics of systems containing two different kinds of radicals. The technique is applied to species generated by photo

Rate constants for one-electron oxidatio
Rate constants for one-electron oxidation by methylperoxyl radicals in aqueous solutions
✍ Robert E. HUIE; P. NETA 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 336 KB 👁 1 views

Rate constants for one-electron oxidation by the methylperoxyl radicals (CH302, HOCHzO;, -O2CCHz0;, and CClsO;) in aqueous solutions have been measured by pulse radiolysis and found to be in the range of 3 x lo5 to 6 x lo8 M-' sK1 for compounds with redox potentials between 0.6 and 0.1 V. Substituti

Absolute rate constants for radical rear
Absolute rate constants for radical rearrangements in liquids obtained by muon spin rotation. Substituent effects on ring fission and cyclization reactions
✍ Peter Burkhard; Emil Roduner; Hanns Fischer 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 565 KB

By addition of the light hydrogen isotope muonium (Mu =w'e-) the, l-ethyl-hexen-1-yl radicals CH, = CHCH2CH2CH2CHCH2Mu, CH, = CHOCH,CH,CHCH,Mu, and CH, = CHCH2CH20CHCH,Mu are generated in liquids. Their Fourier transform muon spin rotation spectra show linewidths increasing with increasing temperatu

Rate constants for the combination of tr
Rate constants for the combination of trichloromethyl radicals and the electron-transfer reaction between hydroxymethyl radicals and carbon tetrachloride in solution
✍ H. Paul 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 728 KB

## Abstract The rate constant for the bimolecular combination of trichloromethyl radicals in methanol is determined as a function of temperature by steady‐state kinetics and electron‐spin resonance with modulated radical initiation. The rate constant is in accord with the Smoluchowski equation and

Kinetics and rate constants for the reac
Kinetics and rate constants for the reaction of tri-n-butylgermanium hydride with methyl iodide and carbon tetrachloride. The combination of methyl and trichloromethyl radicals in solution.
✍ D. J. Carlsson; K. U. Ingold; L. C. Bray 📂 Article 📅 1969 🏛 John Wiley and Sons 🌐 English ⚖ 468 KB 👁 1 views

The kinetics of the photoinitiated reductions of methyl iodide and carbon tetrachloride by tri-n-butylgermanium hydride in cyclohexane at 25°C have been studied and absolute rate constants have been measured. Rate constants for the combination of CH,. and CC1,. radicals are equal within experimental