The kinetics of the reactions OH ฯฉ Br 2 : HOBr ฯฉ Br (1) and OD ฯฉ Br 2 : DOBr ฯฉ Br (3) have been studied in the temperature range 230-360 K and at total pressure of 1 Torr of helium using the discharge-flow mass spectrometric method. The following Arrhenius expressions were obtained either from the k
Kinetic study of the reactions of O-alkylisoureas with OH-acidic compounds
โ Scribed by Rolf Jaeger
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 136 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0894-3230
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โฆ Synopsis
Kinetic investigations on the reaction of N,N'-dicyclohexyl-O-(1-methylheptyl)isourea with acetic acid are described. The conversion proceeds partly through the intermediacy of a methylheptylcarbenium ion. However, in dilute solution an S N 2 mechanism prevails. The results are discussed in terms of the simultaneous existence of two discrete mechanisms.
๐ SIMILAR VOLUMES
Rate coefficients have been measured at 298 ฯฎ 4 K and 1000 mbar total pressure for the reactions of OH with a series of symmetrical acetals (R9O 9CH 2 9O 9R, R ฯญ C 1 to C 4 ) using a relative kinetic technique. The investigations have been performed in a laboratory photoreactor and also in the large
The rate constant for the reaction of OH radicals with pinonaldehyde has been measured at 293 ฯฎ 6 K using the relative rate method in the laboratory in Wuppertal (Germany) using photolytic sources for the production of OH radicals and in the EUPHORE smog chamber facility in Valencia (Spain) using th
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The kinetics and mechanism of the reaction of BrO with dimethylsulfide [ DMS) have been studied by the mass spectrometric discharge-flow method in the temperature range (233-320) K and at a total pressure around 1 torr. The temperature dependence of the reaction rate constant k , = [ 1.5 ? 0 4 ) X 1
The reaction of OH radicals with olefins is known to be important in atmospheric chemistry. From experimental data a global mechanism has been proposed, but the regioselectivity of the products is uncertain. In this work, the OH-propene-O 2 reaction has been studied with ab initio molecular orbital