变温红外法测定键合异构化配合物转化反应的速率常数、活化能及反应焓变

Determination of the Rate Constant,Activation Energy and Reaction Enthalpy of Conversion between the Linkage Isomers Using Variable Temperature FT-IR Technique

通过外接高温池的变温红外光谱仪,测定了键合异构体[Co(NH3)5ONO]Cl2和[Co(NH3)5NO2]Cl2转化反应的速率常数和平衡常数.通过比较不同温度下异构体的红外光谱,求得了配合物异构化的活化能和反应焓变.结果证明,该实验连续性好,实验结果准确,时间短.

In this paper,the rate constant and equilibrium constant of the conversion reaction between the linkage isomers of [Co( NH3)5ONO]Cl2and [Co( NH3)5NO2]Cl2are determined by variable temperature FT-IR technique with an external high-temperature pool. The activation energy and reaction enthalpy of conversion are calculated by treating the IR spectra of the isomers at different temperatures. The experimental results show that the method used in this paper has the advantages of good continuity,accurate experiment results and short time consuming.