Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 59
... activation energy as the reaction be- comes more exothermic , since the saddle point S will get closer to R if T moves down . ( b ) In general , activation energies will be lowered by weakening the weakest bond either in the reactants ...
... activation energy as the reaction be- comes more exothermic , since the saddle point S will get closer to R if T moves down . ( b ) In general , activation energies will be lowered by weakening the weakest bond either in the reactants ...
Page 61
... activation energies for exothermic reactions . Quantitative data on such systems are sparse , but as a qualitative example , trialkylsilanes are brominated rapidly by molecular bromine in inert solvents at room temperature , 11 as in ...
... activation energies for exothermic reactions . Quantitative data on such systems are sparse , but as a qualitative example , trialkylsilanes are brominated rapidly by molecular bromine in inert solvents at room temperature , 11 as in ...
Page 954
... activation for the isomerization of bicyclo [ 3,2,0 ] hept - 1 ( 5 ) -ene determined in the present work ( 31.56 kcal . mole - 1 ) is 14 kcal . mole - 1 less than that for bicyclo [ 3,2,0 ] hept - 6 - ene . The differences between the ...
... activation for the isomerization of bicyclo [ 3,2,0 ] hept - 1 ( 5 ) -ene determined in the present work ( 31.56 kcal . mole - 1 ) is 14 kcal . mole - 1 less than that for bicyclo [ 3,2,0 ] hept - 6 - ene . The differences between the ...
Contents
Physical organic chemistry | 1 |
Topochemistry Part XXX Crystal and molecular structures of chalcone | 11 |
Conformational studies Part I Crystal and molecular structures of cis12dipchlorobenzoyl and cis | 17 |
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4-nitroaniline A. R. Katritzky acetic acid activation energy alcohol Amer amine anion aqueous aromatic aryl-methyl ation axial benzene bond bond dissociation energies bromination calculated carbanion carbon acids catalyst Chem chemical shifts Chemistry chloride compounds concentration conformation corresponding coupling constants crystal cyclohexane derivatives deviations dilute dimethyl sulphoxide dipole electron equation ether ethylene experimental Figure fluorene formation fraction H₂O hydrocarbons hydroxide increase indicators interactions intermediate ionisation isomer isomerization isotope effect k₁ k₂ kcal kcal./mole kinetic Mc./sec measured mechanism methanol methyl mixture mole mole-¹ molecular molecules n.m.r. spectra nitrogen nucleophilic observed obtained oxide oxygen parameters phenyl Phys piperidine proton pyridines R. P. Bell radical rate constants ratio reaction relative ring selenophen shown shows signal sodium solution solvent spectrum structure substituted t-butyl Table temperature Tetrahedron thiophen transition tri-o-thymotide triethylamine triphenylmethane wave