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Correlation of the nuclear quadruple resonance frequencies of Cl35 monosubstituted chlorobenzenes with X-hammett constants

✍ Scribed by E.N. Tsvetkov; G.K. Semin; D.I. Lobanov; M.I. Kabachnik

Book ID
104223987
Publisher
Elsevier Science
Year
1967
Tongue
French
Weight
341 KB
Volume
8
Category
Article
ISSN
0040-4039

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✦ Synopsis

Ham&t wsubstituent constant is a measure of the effect of the substituent on the activation energy of the reaction of the unsubstituted cowpoundw or it "measures the effect of the substituent on the electron density at the reaction site".' The change in halogenobenzenes nuclear quadrupole resonance (N&R) frequency according to the sort of substituent introduced into a benzene ring shows an effect of the latter on the anisotropy of the halogen atom's electron environment. A correlation between these two functions of electron distribution in the side chain of aromatic nucleus is,

πŸ“œ SIMILAR VOLUMES

Correlation of the nuclear quadrupole re
Correlation of the nuclear quadrupole resonance frequencies with X taft constants
✍ E.N. Tsvetkov; G.K. Semin; D.I. Lobanov; M.I. Kabachnik πŸ“‚ Article πŸ“… 1967 πŸ› Elsevier Science 🌐 French βš– 247 KB

The correlations between the nuclear quadrupole resonance (NQR) freqU-.encies and constants characterizing the electron influence of substituents I,2 , are for different reasons (poor accuracy or being of restricted use), valid only in some cases. Recently we have shown3 that there exists an approx