Kinetics and Mechanism of Substitution Reactions of Bis(N,N-Diethyldithiocarbamato) alkylxanthatocobalt (III) With Dipropylamine Di-n-butylamine in Methanol.-Science-Chemical Encyclopedia-lookchem

Kinetics and Mechanism of Substitution Reactions of Bis(N,N-Diethyldithiocarbamato) alkylxanthatocobalt (III) With Dipropylamine (cas 142-84-7) Di-n-butylamine in Methanol.
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The title reactions with R = Me, Et, n-Pr are studied in a temperature range of 25 ~ 40 o C by spectrophotometry. It is found that the rate with respect to [complex] is unity and that to [amine] is fractional. A linear relationship between [amine]/k o b s and [amine] is observed, where k o b s stands for pesudo-first-order rate constant. The rate increases with the increase in water content of the solvent. A mechanism involving a preequilibrium of an adduct formation between the complex and amine is proposed.

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