Abstract

The absolute rate constants for the recombination (k r ) and disproportionation (k d ) reactions of dimethylaminyl radicals were determined at room temperature with the very low pressure reactor (VLPR) technique. The obtained values were k r =(1.70±0.19)×10 -12 cm 3 molecule -1 s -1 and k d =(4.19±0.52)×10 -12 cm 3 molecule -1 s -1 , and the ratio k d /k r was 2.32±0.26. The transition-state geometries for both recombination and disproportionation reactions are loose, with the N...N bond length ca. 3.5 A and the N...H...C distance ca. 4.4 A

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