Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 70
... polar and 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 ...
... polar and 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 ...
Page 136
... polar bonds . In disagreement with current chemical intuition , structures which contain the maximum number of gauche - inter- actions between lone electron pairs or polar bonds represent energy minima and , frequently , the lowest ...
... polar bonds . In disagreement with current chemical intuition , structures which contain the maximum number of gauche - inter- actions between lone electron pairs or polar bonds represent energy minima and , frequently , the lowest ...
Page 308
... polar initial state to a highly polar , ion - pair - like , transition state , it is probable that values of AG and of log k will follow values of ET for various solvents used . Conversely , if the transition state is not very polar ...
... polar initial state to a highly polar , ion - pair - like , transition state , it is probable that values of AG and of log k will follow values of ET for various solvents used . Conversely , if the transition state is not very polar ...
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