Abstract
The kinetics of decomposition of four N-monosubstituted dithiocarbamic acids (I) toparent amines and carbon disulfide were investigated over a wide range of acid concentrationsfrom pH to acidity function regions. The experimental first-order rate constantsin acidity function region are proportional to the mole fraction of I as with the case of pH region, and decrease with increasing acid concentrations. The reaction pathway is establishd based on the rate-acidity profile. The linear relationship between log k and pKa of parent amine (pKN), (eq.6), is interpreted in terms of the rate-determining N-C bond cleavage along with the synchronous proton transfer.
