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The ~1H NMR spectra recorded during the thermolysis of lauroyl peroxide and of 3,5,5-trimethylhexanoyl peroxide in ODCB containing 2-iodopropane show CIDNP multiplet effect. It wasobserved that the relative concentrations of 1-iodoundecane and 2-iodopropane. both polarized andnormal species. changed with time. The relaxation time T_1 of the a-protons in 1-iodoundecaneand vinyl protons of CH_2 in 1-undecene, enhancement factor of the protons of polarized species andthe rate constant of decomposition for lauroyl peroxide have been determined. The mechanismof the decomposition of the entitled peroxides is discussed in terms of the radical pair theory.
The ~ 1H NMR spectra recorded during the thermolysis of lauroyl peroxide and of 3,5,5-trimethylhexanoyl peroxide in ODCB containing 2-iodopropane show CIDNP multiplet effect. It wasobserved that the relative concentrations of 1-iodoundecane and 2-iodopropane. and normal species. changed with time. The relaxation time T_1 of the a-protons in 1-iodoundecane and vinyl protons of CH_2 in 1-undecene, enhancement factor of the protons of polarized species and the rate constant of decomposition for lauroyl peroxide have been determined. mechanismof the decomposition of the entitled peroxides is discussed in terms of the radical pair theory.