60 Co‐ v Radiolysis of a Mixture of Benzene and Cyclohexane in Presence of Diphenyl Mercury

In the radiolysis of cyclohexane in presence of 4×10 −3 M diphenylmercury (Hg φ 3 ) three isomers of hexane, methylcyclopentane (G=0.018), benzene (G=0.42) and cyclohexene (G=0.047) were detected. Addition of benzene in the mixture of cyclohexane and Hg φ 3 formed two isomers of pentane, hexene and one isomer of hexane as additional products, while cyclohexene was eliminated completely. Normally, eight products were detected in presence of 10 to 50% benzene. Total radiolytic yield of products increased in presence of 15 to 25% benzene but in presence of 35 to 50% benzene G values became very low. Considerable amount of hexene is formed in a mixture of benzene and cyclohexane but neither benzene nor cyclohexane in presence of Hg φ 2 formed this compound. In the presence o. benzene and φ 2 Hg hexane yield is very much reduced. Protection is observed in presence of 10% as well as 35 to 50% benzene in this system. The plot of benzene concentration in moles/litre versus methylcyclopentane is linear and from the slope of the straight line, the values of rate constants were found to be 2.65×10 −2 litre/mole sec., 5.25×10 −3 litre mole sec., 9×10 −7 litre/mole sec. for methylcyclopentane, cyclohexane and benzene respectively. A plot of G(–c‐C 6 H 12 ) versus 1/[C 6 H 6 ] also gave a straight line which confirms the sponge type protection in this multicomponent system.