Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 541
... energy barrier isgreatest for substituents with a strong - / ( inductive ) but no -M ( mesomeric ) effect . TABLE 1 Computed energy barrier height compared with those obtained. balanced by the small strain energy of the six - membered ...
... energy barrier isgreatest for substituents with a strong - / ( inductive ) but no -M ( mesomeric ) effect . TABLE 1 Computed energy barrier height compared with those obtained. balanced by the small strain energy of the six - membered ...
Page 729
... energy difference is merely U ( 180 ) — U ( 60 ) where now w is the CH - CCl angle [ cf ( A ) and ( B ) ] . The calculated energies for the two values of the C • C⚫Cl angle considered are shown in Table 1 together with the observed ...
... energy difference is merely U ( 180 ) — U ( 60 ) where now w is the CH - CCl angle [ cf ( A ) and ( B ) ] . The calculated energies for the two values of the C • C⚫Cl angle considered are shown in Table 1 together with the observed ...
Page 981
... energy of activation . To calculate a complete potential - energy surface , or even the energy curve for some assumed reaction co - ordinate , for simple reactions involves an enormous amount of computation , and is currently impossible ...
... energy of activation . To calculate a complete potential - energy surface , or even the energy curve for some assumed reaction co - ordinate , for simple reactions involves an enormous amount of computation , and is currently impossible ...
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