NMR study of the effect of substituents at the 2 and 4 positions of imidazoline nitroxide radicals on long-range delocalization of spin density
Physical Chemistry
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Conclusions
- 1.
Using the1H and13C NMR methods, we have shown that the spin density in the functional group found at the 4 position of the ring in 3-imidazoline-3-oxide nitroxide radicals increases as its π donor character increases.
- 2.
Substitution of the methyl groups at the C2 atom by alkoxy groups promotes more effective penetration of spin density into the C=N group of the imidazoline ring and the functional group at the C4 atom conjugated with the ring.
Keywords
Methyl Spin Density Nitroxide Imidazoline Alkoxy Group
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© Plenum Publishing Corporation 1989