Acetylene hydroxyl radical reaction

Schindler and coworkers verified the formation of hydroxyl radicals kinetically and further RRKM calculations by Cremer and coworkers placed the overall concept on a more quantitative basis by verifying the measured amount of OH radical. An extensive series of calculations on substituted alkenes placed this overall decomposition mechanism and the involvement of carbonyl oxides in the ozonolysis of alkenes on a firm theoretical basis. The prodnction of OH radicals in solution phase was also snggested on the basis of a series of DFT calculations . Interestingly, both experiment and theory support a concerted [4 4- 2] cycloaddition for the ozone-acetylene reaction rather than a nonconcerted reaction involving biradical intermediates . 

The rate constant for the atmospheric, gas-phase reaction between photochemically produced hydroxyl radicals and organic chemicals and the rate constant for the gas-phase reaction between ozone and olefinic/acetylenic compounds. The rate constants estimated by the program are then used to calculate atmospheric half-lives for organic compounds. 

Acetylene is a gas that will partition almost exclusively to the air where it is degraded by reaction with hydroxyl radicals (13 day half-life). Although soluble in water (1230mgl at 25°C), acetylene is not... 

The AOP (1990) program calculates transformation rate constants for the gas-phase reactions between hydroxyl radicals and organic chemicals in the atmosphere using the fragment method of Atkinson and rate constants for the reaction between ozone and olefins/acetylenes. 

He also synthesised tyrosine. Erlenmeyer investigated hydracrylic and lactic acids. He recognised the double bond in ethylene and the triple bond in acetylene, and proposed a formula for naphthalene. He invented the conical flask, and a gas combustion furnace. Erlenmeyer s rule states that in many reactions the hydroxyl hydrogen of the carbinol radical shifts to the adjacent... 

Hatakeyama, S., Okuda, M., Akimoto, H. Formation of sulfur dioxide and methanesulfonic acid in the photooxidation of dimethyl sulfide in the air. Geophys. Res. Lett. 9, 583-586 (1982) Hatakeyama, S., Washida, N., Akimoto, H. Rate constants and mechanisms for the reaction of hydroxyl (OD) radicals with acetylene, propyne, and 2-butyne in air at 297 2 K. J. Phys. Chem. 90, 173-178 (1986)... 

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