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Electron Spin Resonance Studies of Substituent Effects. Correlations with σ Constants

✍ Scribed by Strom, E. Thomas

Book ID
126125856
Publisher
American Chemical Society
Year
1966
Tongue
English
Weight
260 KB
Volume
88
Category
Article
ISSN
0002-7863

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📜 SIMILAR VOLUMES

Correlation of substituent resonance eff
Correlation of substituent resonance effects with free radical spin densities
✍ I.B. Afanas'ev 📂 Article 📅 1970 🏛 Elsevier Science 🌐 French ⚖ 236 KB

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) =

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 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 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