Quarterly Journal of the Chemical Society of London, Volume 1 |
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Page 5
... conformation there would be unacceptably strong repulsion between the ortho - hydrogen atoms of the co - planar rings and the other substituents on the ethylenic double bond . The steric consequences of substitution in the trans ...
... conformation there would be unacceptably strong repulsion between the ortho - hydrogen atoms of the co - planar rings and the other substituents on the ethylenic double bond . The steric consequences of substitution in the trans ...
Page 30
... conformation ( Mec , MеD , Mеg , Mer , Meg , 7.43 7.52 10 c / sec . 749 752 10 c / sec . 7:43 7:52 7:55 E FIGURE 6 ... conformation . The relative proportions of propeller ( 0-86 ) and helical ( 0-14 ) conformations in pentachloroethane ...
... conformation ( Mec , MеD , Mеg , Mer , Meg , 7.43 7.52 10 c / sec . 749 752 10 c / sec . 7:43 7:52 7:55 E FIGURE 6 ... conformation . The relative proportions of propeller ( 0-86 ) and helical ( 0-14 ) conformations in pentachloroethane ...
Page 33
... conformation is of lower free energy than the helical conformation , in spite of the higher symmetry of the propeller conformation . The conformational itinerary which these macrocyclic compounds undergo is associated with the ...
... conformation is of lower free energy than the helical conformation , in spite of the higher symmetry of the propeller conformation . The conformational itinerary which these macrocyclic compounds undergo is associated with 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