尾式缬氨酸四苯基卟啉锌与嘧啶轴配反应光谱和热力学

The Spectra and Thermodynamics of Axial Coordination Reaction of Tailed Valine Tetraphenylporphintozinc with Pyrimidine

研究了 5 (4 缬氨酸丁氧苯基 ) 10 ,15 ,2 0 三 (4 氯苯基 )卟啉锌与嘧啶在氯仿溶液中轴配反应光谱和热力学性质。用紫外 可见分光光度法确定了轴向配位反应体系的配位数和平衡常数。用温度系数法求得了轴配反应的标准摩尔焓变和标准摩尔熵变。探讨了温度对轴向配位反应的影响。

The electronic absorption spectra and thermody na mics of axial coordination reaction of 5-(4-valine butoxyphenyl)-10,15,20-tr i(4-chlorophenyl)porphintozinc with pyrimidine in CHCl 3 were studied. Coor dination numbers and equilibrium constants of axial coordination reaction were m easured by visible spectra techniques.The changs of standard molar enthalpies an d standard molar entropies of reaction were obtained from the plots of lnβ vs 1 /T.The influence of temperature on the axial reaction was discussed.