𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Atmospheric reactions of alkoxy and β-hydroxyalkoxy radicals

✍ Scribed by Roger Atkinson

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
137 KB
Volume
29
Category
Article
ISSN
0538-8066

No coin nor oath required. For personal study only.

✦ Synopsis

Under tropospheric conditions, the major alkoxy radical removal processes involve reaction with O 2 , unimolecular decomposition, and isomerization [1 -4]. The alkoxy radical isomerizations proceed by a cyclic transition state and, because of the ring strain involved, the 1,4-H shift isomerizations proceeding through a 5-member ring transition state are calculated to be much less important (by a factor of ca. 5 ϫ 10 3 at 298 K [6]) than the 1,5-H shift isomerizations proceeding through a 6-member, essentially strain-free, transition state . Eberhard et al. [7] observed no evidence for the 1,4-H shift isomerizations for the 2-and 3-hexoxy radicals, in agreement with predictions , and the 1,4-H shift isomerization reactions of alkoxy radicals are therefore neglected in the following discussion. For the 2-pentoxy radical, the decomposition and isomerization reactions and the reaction with O 2 are shown in Scheme I.

📜 SIMILAR VOLUMES

Reactions of alkoxy radicals with O2. I.
Reactions of alkoxy radicals with O2. I. C2H5O radicals
✍ Steven Zabarnick; Julian Heicklen 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 899 KB

CzH50NO was photolyzed with 366 nm radiation at -48, -22, -2.5, 23, 55, 88, and 120°C in a static system in the presence of NO, 0,, and N,. The quantum yield of CH3CH0, (D{CH3CHO), was measured as a function of reaction conditions. The primary photochemical act is (la) CZHSONO + hv -\* CzH50 + NO an

Reactions of alkoxy radicals with O2. II
Reactions of alkoxy radicals with O2. III. i-C4H9O radicals
✍ Steven Zabarnick; Julian Heicklen 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 826 KB

i-C4HgON0 was photolyzed with 366-nm radiation at -8, 23, 55, 88, and 120°C in a static system in the presence of NO, O,, and N2. The quantum yield of i-C,H7CH0, @{i-C3H7CHO}, was measured as a function of reaction conditions. The primary photochemical act is and it proceeds with a quantum yield &

The reactions of alkoxy radicals with O2
The reactions of alkoxy radicals with O2. II. n-C3H7O radicals
✍ Steven Zabarnick; Julian Heicklen 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 910 KB

n-C3H70N0 was photolyzed with 366 nm radiation at -26, -3,23,55, 88, and 120°C in a static system in the presence of NO, Oz, and N 2 . The quantum yields of C2H5CH0, C z H 5 0 N 0 , and CH3CH0 were measured as a function of reaction conditions. The primary photochemical act is and it proceeds with