| Abstract: | The thermal and methyl radical initiated decomposition of biacetyl-d6 were investigated at conversions 5% over the temperature range of 387-412°C and 251–292°C, respectively. The deuterated sample contained 10.5% biacetyl-d5. The reaction products were analyzed by mass spectrometry. The following data could be determined from product ratios:  where E is in kcal/mol With reasonable assumptions and literature data Arrhenius parameters for elementary steps were derived and discussed in particular with respect to isotopic effects in H/D-abstraction reactions. |
