Syntheses, Structures, and Spectroscopic Properties of Cobalt(III) Complexes Containing 3- or 4-Pyridyl-Substituted Nitronyl and Imino Nitroxide Ligands
✍ Scribed by Masahiro Ogita; Youhei Yamamoto; Takayoshi Suzuki; Sumio Kaizaki
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 404 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Several new cobalt(III) complexes incorporating 4,4,5,5tetramethyl-2-(3-or 4-pyridyl)imidazolin-1-oxyl 3-oxide (NITnpy) (n = 3 or 4) or 4,4,5,5-tetramethyl-2-(3-or 4-pyridyl)imidazolin-1-oxyl (IMnpy) have been prepared. The X-ray crystallographic analyses and the spectroscopic investigations have revealed that the nitronyl or imino nitroxides with the radical character are bound through the pyridyl-N atom to a Co III center. There are some influences from the radical unpaired electron toward the Co III complex moiety and those from the coordination of the Co III ion toward the