FeⅡ-TPPS_3配合物光谱电化学研究

Studies on the Spectro electrochemistry of Fe-TPPS 3 Complexese

用吸收光谱、单扫描极谱及光谱电化学方法研究Ｆｅ２＋三磺基四苯基卟啉（简写为ＴＰＰＳ３）的水溶性配合物在ｐＨ～４．０的ＨＡｃ－ＮａＡｃ缓冲体系中的性质。实验证明Ｆｅ２＋与ＴＰＰＳ３在９０℃下加热８０ｍｉｎ可以反应完全，配合物主要以ＴＰＰＳ３二聚体和ＴｅⅢ－ＴＰＰＳ３单体的形态存在于该介质中，Ｈ＋参与了配合物的电极反应，Ｆｅ－ＴＰＰＳ３体系中配合物的组成比为１∶１，ＦｅⅢ－ＴＰＰＳ３在电极上还原为ＦｅⅡ－ＴＰＰＳ２为不可逆过程。

The properthies of water soluble complexes of Fe 2+ and TPPS 3 in the pH 4.0 HAc-NaAc buffer system have been studied by the methods of the monscanning polarography and spectroelectro chemical experiment inthis pqper. The experimental result have shown∶Fe 2+ and TPPS 3 would reactcompletely in 80min at 90℃; The coordination compounds exist in the formations of the Fe-TPPS 3 dimer and Fe-TPPS 3 monomer, H +partakes in the electro reaction; One to one is the composition ratio of the complexes of the electical acticing in the Fe-TPPS 3 system; The process which Fe-TPPS 3 is reduced from the Fe-TPPS 3 is irreversible.