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Electron Spin Resonance of the Monodeuterotropenyl Radical. Effect of the Deuterium Substituent

✍ Scribed by Volland, Walter V.

Book ID
120460080
Publisher
American Institute of Physics
Year
1968
Tongue
English
Weight
794 KB
Volume
48
Category
Article
ISSN
0021-9606

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πŸ“œ SIMILAR VOLUMES

Effect of substituents on spin density i
Effect of substituents on spin density in benzimidazole nitronyl nitroxide radicals studied by electron spin resonance
✍ Burak Esat; Ismail Fidan; Sumeyye Bahceci; Yusuf Yerli; Levent Sari πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 259 KB

## Abstract Several novel benzimidazole‐3‐oxide‐1‐oxyl radicals with substituents at 5 and/or 6 position were synthesized. The ESR analysis of nitrogen hyperfine coupling constants (hfccs) revealed that substituents at 5 and 6‐position affect the spin density to greater extent than substituents on

Correlation of substituent resonance eff
Correlation of substituent resonance effects with free radical spin densities
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The rate constants of radical reactions are know to depend at least on three principal effects: polar, resonance and steric. A steric effect can be ignored for compounds which do not have bulky substituents. Then substituent effects can be expressed in terms of the Taft equation (I): h5(ksub/ko) =