Synthesis of the high-valent Mn porphyrin species by peroxy acid oxidation of MnIII dimers. Characterization of the MnIV2 species and evidence of the MnV-MnIII intermediate

Chemistry Letters

Volumn , Issue 2, 1998, Pages 185-186

  Ichihara, Kanako ^a   Naruta, Yoshinori ^a  

^a KYUSHU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0032373735     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.1998.185     Document Type: Article

References (16)

1. As reviews, see, "Metalloporphyrins in Catalytic Oxidations," ed by R. A. Sheldon, Marcel Dekker, New York (1994); "Manganese Redox Enzymes," ed by V. L. Pecoraro, VCH, New York (1992).
2. As reviews, see, "Metalloporphyrins in Catalytic Oxidations," ed by R. A. Sheldon, Marcel Dekker, New York (1994); "Manganese Redox Enzymes," ed by V. L. Pecoraro, VCH, New York (1992).
3. J. T. Groves and M. K. Stern, J. Am. Chem. Soc., 110, 8628 (1988); J. T. Groves and Y. Watanabc, Inorg. Chem., 25, 4808 (1986).
4. J. T. Groves and M. K. Stern, J. Am. Chem. Soc., 110, 8628 (1988); J. T. Groves and Y. Watanabc, Inorg. Chem., 25, 4808 (1986).
5. J. A. Smegal and C. L. Hill, J. Am. Chem. Soc., 105, 3515 (1983) and references cited therein.
6. M. J. Camenzind, F. J. Hollander, and C. L. Hill, Inorg. Chem., 21, 4301 (1982).
7. R. D. Arasasingham, G. -X. He, and T. C. Bruice, J. Am. Chem. Soc., 115, 7985 (1993).
8. Y. Naruta, M. Sasayama, and T. Sasaki, Angew. Chem. Int. Ed. Engl, 33, 18, 1839 (1994).
9. Y. Naruta, M. Sasayama, and K. Ichihara, J. Mol. Catal. A: Chemical, 117, 115 (1997).
10. Pyridine or 1-methylimidazole can coordinate to the Mn ions only at the external site of the dimer. These nitrogenbases arc used in order to stabilize high-valent Mn ions.
11. 2 gas pressure.
12. 4
13. + (m/2 = 835).
14. Other oxidation products (alcohols or ketoncs) were not detected. Longer reaction period did not give any change in ehe cpoxide yield nor UV-vis spectra.
15. III has been suggested for Mn porphyrin monomers at high pH conditions; P. N. Balasubramanian, E. S. Schmidt, and T. C. Bruice, J. Am. Chem. Soc., 109, 7865 (1987).
16. V. K. Yachendra, K. Sauer, and M. P. Klein, Chem. Rev., 96, 2927 (1996).