UV Spectrum and the Kinetics and Reaction Pathways of the Self-Reaction of CH2CH2OH Radicals

Article abstract of DOI:10.1021/j100379a033

CH2CH2OH radicals have been studied at room temperature by using a pulse radiolysis/kinetic absorption technique.The ultraviolet spectrum lies in the range 210-265 nm with a maximum absorption cross section of 2.0*10^-18 cm² molecule^-1 at 210 nm.This technique has also been used to study the overall kinetics of the self-reaction of these radicals: 2CH2CH2OH (+M) --> (CH2CH2OH)2 (+M) (7a); 2CH2CH2OH (+M) --> CH3CHO + CH3CH2OH (7b), while product studies using gas chromatography have yielded information on the reaction pathways.A value of k₇ = 5.6(+/-1.0)*10^-11 cm³ molecule^-1 s^-1 and a branching ratio of k_7a/(k_7a + k_7b) <*> 0.88 have been measured at room temperature.