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트란스-[Co(cyclam)Cl₂]+의 아질산이온에 의한 치환반응
姜申杰,趙鶴濟 대구대학교 기초과학연구소 1987 基礎科學硏究 Vol.4 No.-
The kinetics of substitution reaction of trans- [Co(cyclam)Cl₂]+ (cyclagm =I, 4, 8,11-tetraazacyclotetradecane) with nitrite ion have been studied in N, N-dimethylformamide solutions at various temperatures. The observed rate constants(k.b,d) of the complex are proportional to the concentration of nitrite ion and have the form k_(obsd) = a+b [NO₂-]. The value of second-order rate constant(b) at 25℃ is 2.41 × 10^(-3), M^(-1) sec^(-1). The values of ΔH and ΔS are 11.89 kcal·moi^(-1) and -30.59 cal·mol^(-1)K^(-1) respectively. The tentative conclusion is made that associative activation is occuring in the reaction.