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Citation: Li Zhen, Xia Chun-Gu. Rapid-Mixing Stopped-Flow Spectra Studies on Water-soluble Manganese Porphyrin Enzyme-Mimic Systems[J]. Acta Physico-Chimica Sinica, ;2001, 17(02): 101-106. doi: 10.3866/PKU.WHXB20010202 shu

Rapid-Mixing Stopped-Flow Spectra Studies on Water-soluble Manganese Porphyrin Enzyme-Mimic Systems

Li Zhen ,
Xia Chun-Gu

1.
State Key Laboratory of Oxo Synthesis＆Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Science,Lanzhou　730000

Received Date: 16 May 2000
Available Online: 15 February 2001

The reaction of watersoluble Manganese porphyrin complex,MnⅢ(TMPyP) with a variety of oxidants(mCPBA,KHSO5,NaOCl and H2O2) under ambient conditions at different pH was investigated by stoppedflow techniques.Oxomanganese(IV) porphyrin complex intermediate (2) was the main product at lower pH.Highvalent oxomanganese(V) porphyrin (1) was fully formed and subsequently decayed to oxoMn(Ⅳ) at higher pH.It was shown that oxomanganese(V) porphyrin was the reactive complex with reducing substrates.
- Water-soluble manganese porphyrin complexes;Single oxygen donors;　Catalytic oxidation;Stopped-flow technique
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