Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 70
... steric constants , * and Es.21 If we assume that steric as well as polar effects of groups conform to a linear free - energy relation- ship Taft's equation can be written as equation ( 2 ) , log klog ko - log k 。= p *。* + p'Es ( 2 ) ...
... steric constants , * and Es.21 If we assume that steric as well as polar effects of groups conform to a linear free - energy relation- ship Taft's equation can be written as equation ( 2 ) , log klog ko - log k 。= p *。* + p'Es ( 2 ) ...
Page 175
... Steric effects are of relatively greater importance with the sulphenyl halide than with the halogens and this also contributes to the lower selectivity . Skeletal Rearrangements of Siliconium lons in the Gas Phase : THE influence of ...
... Steric effects are of relatively greater importance with the sulphenyl halide than with the halogens and this also contributes to the lower selectivity . Skeletal Rearrangements of Siliconium lons in the Gas Phase : THE influence of ...
Page 1214
... steric interactions of the leaving group are larger in the transition state than in the ground state . Thus , increased ground - state steric interactions of the leaving group can slow the rate of solvolysis rather than increase it ...
... steric interactions of the leaving group are larger in the transition state than in the ground state . Thus , increased ground - state steric interactions of the leaving group can slow the rate of solvolysis rather than increase it ...
Contents
Physical organic chemistry | 1 |
Contents | 6 |
Kinetics and mechanism of electrophilic substitution of heteroaromatic compounds Part XXIV Acid | 11 |
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A2 mechanism acetic acid-catalysed addition alcohol alkaline hydrolysis Amer analysis anion aqueous aromatic benzene benzoate bond bromine cal mol-1 calculated carbon atom carbonium ion carbonyl catalysis Chem Chemistry chlorine compounds concentration conjugate conjugate acid correlation deuterium diastereomers dienamines dioxan electron pairs energy entropies of activation epoxide equation esters ether ethylene exchange experimental Figure formation glycol H₂O hydrogen hydroxide hypochlorous acid indicate intramolecular isomer isotope effects k₁ k₂ ketone kinetic MeOH methanol methanolysis methiodide method methyl mixture mmHg mol-¹ molecular molecule n-pentyl n.m.r. spectra nitration nucleophilic observed obtained olefin oxidation oxygen p-xylene parameters perchloric acid Phys polar positive proton R. J. W. Le Fèvre radical rate coefficients rate constants ratio reaction constant reactivity relative resorcinol ring sodium solution solvent steric steric effects structure studied substituent substituted substrate t-butyl Table temperature Tetrahedron thiophen trans triethylborane values