Citation: Shan Jin-Juan, Ling Qin, Wang An-Zhou. Kinetics of Reactions of Alkylxanthatocobalt(III) with Dipropylamine in Methanol[J]. Acta Physico-Chimica Sinica, 1994, 10(08): 728-732. doi: 10.3866/PKU.WHXB19940812
烷基黄原酸合钴(III)与二丙胺第三步反应动力学
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关键词:
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烷基黄原酸合钴(III)
- / 二丙胺
- / 第三步反应动力学
English
Kinetics of Reactions of Alkylxanthatocobalt(III) with Dipropylamine in Methanol
The title reactions with R=Me, Et, n-Pr were studied in a temperature range of 298-313K by spectrophotometry. It was found that the rate with respect to [complex] is unity and that to [amine] is fractional. A linear relationship between [amine]/kobs and [amine] was observed, where kobs stands for pseudo-first-order rate constant. The rate increases with the increase in water content of the solvent. A mechanism involving a preequllibrium of an adduct formation between the complex and amine was proposed. The equation derived from the mechanism explained all the experimental results and the preequllibrium constants, rate constants of the rate-determing step along with the activation parameters were evaluated.
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Key words:
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Alkylxanthatocobalt(III)
- / Dipropylamine
- / Kinetics of reactions
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