192228-36-7Relevant academic research and scientific papers
Spin Transition in a Manganese(III) Porphyrin Cation Radical, Its Transformation to a Dichloromanganese(IV) Porphyrin, and Chlorination of Hydrocarbons by the Latter
Kaustov, Lilia,Tal, Merav E.,Shames, Alexander I.,Gross, Zeev
, p. 3503 - 3511 (2008/10/09)
Chemical oxidation of (TMP)MnIII(Cl) (TMP = the tetramesitylporphyrinato dianion) by Fe(ClO4)3 leads to the porphyrin-oxidized product (TMP·+)MnIII(ClO4)2. Magnetic measurements and EPR spectroscopy show that the total spin of the complex changes from S = 5/2 at high temperature to S = 3/2 at low temperature. Ligand exchange of the perchlorato ligands in (TMP·+)MnIII(ClO4)2 by chloride anions is accompanied by a change of the oxda on site from porphyrin to metal, resulting in (TMP)MnIV(Cl)2. This high-valent-metal complex can effect chlorine atom transfer to olefins, as well as to dimedone and chlorodimedone, natural substrates of chloroperoxidases.
