Kinetics and mechanism of substitution reactions of bis(N,N -diethyldithiocarbamato) alkylxanthatocobalt(Ⅲ) with dipropylamine and di-n-butylamine in methanol

Acta Chimica Sinica ›› 1994, Vol. 52 ›› Issue (11): 1140-1144. Previous Articles

Original Articles

二(N,N-二乙基二硫代氨基甲酸)烷基黄原酸合钴(Ⅲ)与二丙胺和二丁胺反应的动力学

单金缓;刘铁英

河北大学化学系

发布日期:1994-11-15

Kinetics and mechanism of substitution reactions of bis(N,N -diethyldithiocarbamato) alkylxanthatocobalt(Ⅲ) with dipropylamine and di-n-butylamine in methanol

SHAN JINHUAN;LIU TIEYING

Published:1994-11-15

Abstract

The title reactions with Co(S2CNEt2)(S2COR) (R = Me, Et, n-Pr) were studied in a temperature range of 25~40?by spectrophotometry. 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 preequil. of an adduct formation between the complex and amine was proposed. The equation derived from the mechanism explained all the experimental results and the preequil. constants, rate consts of the rate-detg. step along with the activation parameters were evaluated.

Key words: SPECTROPHOTOMETRY, REACTION MECHANISM, REACTION KINETICS, METHANOL, COBALT COMPLEX, REACTION RATE CONSTANT, XANTHOGENATE, DI-N-BUTYLAMINE

CLC Number:

O643

Cite this article

SHAN JINHUAN;LIU TIEYING. Kinetics and mechanism of substitution reactions of bis(N,N -diethyldithiocarbamato) alkylxanthatocobalt(Ⅲ) with dipropylamine and di-n-butylamine in methanol[J]. Acta Chimica Sinica, 1994, 52(11): 1140-1144.

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二(N,N-二乙基二硫代氨基甲酸)烷基黄原酸合钴(Ⅲ)与二丙胺和二丁胺反应的动力学

Kinetics and mechanism of substitution reactions of bis(N,N -diethyldithiocarbamato) alkylxanthatocobalt(Ⅲ) with dipropylamine and di-n-butylamine in methanol

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