Experimental and theoretical investigation on the OH + CH₃C(O)CH₃ reaction at interstellar temperatures (T=11.7-64.4 K).

ABSTRACT: The rate coefficient, k(T), for the gas-phase reaction between OH radicals and acetone CH₃C(O)CH₃, has been measured using the pulsed CRESU (French acronym for Reaction Kinetics in a Uniform Supersonic Flow) technique (T = 11.7-64.4 K). The temperature dependence of k(T = 10-300 K) has also been computed using a RRKM-Master equation analysis after partial revision of the potential energy surface. In agreement with previous studies we found that the reaction proceeds via initial formation of two pre-reactive complexes both leading to H₂O + CH₃C(O)CH₂ by H-abstraction tunneling. The experimental k(T) was found to increase as temperature was lowered. The measured values have been found to b

SUBMITTER: Blazquez S 

PROVIDER: S-EPMC6887536 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature