✦ LIBER ✦

Unimolecular decomposition of chemically activated methylallylether

✍ Scribed by Toshio Ibuki; Yoshimasa Takezaki

Publisher: John Wiley and Sons
Year: 1977
Tongue: English
Weight: 567 KB
Volume: 9
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550090205

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The unimolecular decomposition of chemically activated methylallylether (MAE) formed by the cross combination of methoxymethyl and vinyl radicals was studied in the gas phase. The experimentally determined rate constant was found to be 1.11 × 10^8^ sec^−1^ at 9.6°C for the decomposition of MAE into propene and formaldehyde. The decomposition of MAE via the six‐center retro‐“ene” type transition state is analyzed by using the RRKM unimolecular reaction theory. For the molecular parameter assignments of energized MAE, a model which contains one internal rotational mode is supported, and MAE decomposition is characterized by a tight complex model. The best agreement between experimental and theoretical results was found when a critical energy of 40.1 kcal/mol was used.

📜 SIMILAR VOLUMES

The unimolecular decomposition and isome

The unimolecular decomposition and isomerization of chemically activated 1-methyl-2,2,3,3-tetrafluorocyclopropane

✍ G. Arbilla; J. C. Ferrero; E. H. Staricco 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 591 KB

The reaction of CHZ('A1) with 1,1,2,2-tetrafluorocyclopropane was studied at 300 K and a t pressures between 9.0 and 365.0 torr. Chemically activated 1-methyl-2,2,3,3-tetrafluorocyclopropane was formed and two competitive reaction paths, namely decomposition and isomerization, were observed. By fitt

Decomposition of chemically activated mo

Decomposition of chemically activated monochloroethyl radicals

✍ Le-Khac Huy; W. Forst; J.A. Franklin; G. Huybrechts 📂 Article 📅 1969 🏛 Elsevier Science 🌐 English ⚖ 310 KB

The rate constant for the unimolecular decomposition of chemically activated monochioroethyl radicals has been calculated at 310°K using RRKM theory. The result obtained is in satisfactory agreement with the experimental value. ## PRYSICS LETTERS May 1969 chloroethyl radicals, satisfactory result

Unimolecular decomposition of ethoxytrim

Unimolecular decomposition of ethoxytrimethylsilane

✍ David A. Herold; Jean H. Futrell 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 381 KB

A study of the metastable spectra from ethoxytrimethylsilane and the mass shifts of the deuterium-labeled species permitted the rationalization of the fragmentation mechanism for forming all major ions in the mass spectrum. A new mechanistic pathway for the formation of [Si(CH3)31+ (m/z 73) is demon

Unimolecular decomposition of H3CONO+*

✍ Eldon E. Ferguson 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 447 KB

A model for the decomposition of methylnitrite ions to produce protonated formaldehyde is proposed which invokes quantummechanical tunneling of hydrogen between the initial C and final 0 atoms. A barrier is adopted, guided by theoretical transitionstate calculations for H transfer from C to H in the

Decomposition of chemically activated di

Decomposition of chemically activated dimethylcyclopropane molecules vibrationally excited to various extent

✍ T. Bérces; I. Szilágyi; L. Zalotai; F. Márta 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 677 KB

The photolyses of ketene (at 313 and 280 nm) and diazirine at 313 nm in the presence of cis-butene-2 were studied. Vibrational relaxation of chemically activated dimethylcyclopropane was shown to occur as a multistep process, and 17 & 4 k,J mot-' was obtained for the average energy transferred per c

On the nonstatistical character of chemi

On the nonstatistical character of chemically activated CHF2Cl* and CHF3* decomposition

✍ V.I. Vedeneev; A.I. Voronin; M.A. Teitelboum 📂 Article 📅 1975 🏛 Elsevier Science 🌐 English ⚖ 329 KB

The RRKM theory and thz quantumraiation of RRK theory are used to c~lculare the decomposition rate constants of chemically activated CHFzCl and CHF,. The calculated values of the rate constants are compared with cxperimcntal datn. It is shown that the decompositions of CHFS and CHFzCt\* proceed muc