金属离子和磺化酞菁反应动力学研究

Studies on Kinetics of Reaction Between Metal Ion and Phthalocyaninesulfonates

本文首次采用分光光度法研究金属离子和磺化酞菁反应动力学,给出精确求解方法。并用这一方法研究了Cu(Ⅱ)与三磺化酞菁(L)的反应动力学,提出了可能的反应机理。 1 计算原理 在磺化酞菁L与金属离子M的反应体系中,可能存在下列反应:2LL_2,L_2+MML+L,L+M ML,L_2+2M(ML)_2,2ML(ML)_2。选择适当的反应条件,使得金属离子在测定波长下无吸收;磺化酞菁金属配合物的二聚可忽略。

The kinetics of reaction between metal ion and phthalocyaninesulfonates has been studied by electronic absorption spectroscopy and the kinetics of reaction between Cu( Ⅱ ) and trisulfophthalocyanine (S3Pc) was studied in this way. It shows that the rate of reaction between Cu( Ⅱ ) and S3Pc and can be expressed as follows: v =k1k2[Cu][L]2.