Quarterly Journal of the Chemical Society of London, Volume 6 |
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Page 1336
... Absorption Spectra . - The absorption spectra of all N - methyl- and N - benzyl - adenines were measured ( Table 3 ) . The bathochromic shift due to the methyl or benzyl substituent is negligible here . The calculated wave- lengths for ...
... Absorption Spectra . - The absorption spectra of all N - methyl- and N - benzyl - adenines were measured ( Table 3 ) . The bathochromic shift due to the methyl or benzyl substituent is negligible here . The calculated wave- lengths for ...
Page 1561
... absorption spectrum ( Figures 1 , 2 , and 3 ) and e.s.r. spectrum . Whilst these radical anions were relatively stable at -70 ° C , elevation of the temperature caused a decay in the intensity of the e.s.r. spectra and a simultaneous ...
... absorption spectrum ( Figures 1 , 2 , and 3 ) and e.s.r. spectrum . Whilst these radical anions were relatively stable at -70 ° C , elevation of the temperature caused a decay in the intensity of the e.s.r. spectra and a simultaneous ...
Page 1565
... absorption and e.s.r. spectra . Each of these radical anions decays at higher temperatures to give the well known absorption spectra of the corresponding anions . It was the purpose of this study to investigate this type of reaction ...
... absorption and e.s.r. spectra . Each of these radical anions decays at higher temperatures to give the well known absorption spectra of the corresponding anions . It was the purpose of this study to investigate this type of reaction ...
Contents
ISOWA 013 | 1034 |
Physical organic chemistry | 1035 |
Studies of the reactions of the anhydrosulphites of ahydroxycarboxylic acids Part IV Steric | 1044 |
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2,4-dinitrophenyl absorption acetic acid aci-anion acid anhydrosulphite adducts alcohol aluminium hydride Amer amines aqueous aromatic atom attack bands benzene benzophenones benzyl bond calculated carbon tetrachloride carbonyl catalysis Chem chloride compounds concentration conformation corresponding decomposition dioxan dipole effect electron electrophilic equation ester ethanol ether ethylene experimental Figure first-order formation hydrogen hydrolysis hydroxide hydroxyl interaction ionic strength isomer k₁ k₂ ketone kinetic leaving group measured mechanism methyl methyl phosphate mixture molar Kerr constants mole mole-¹ molecular molecules nitrogen nitromethane NO₂ nucleophilic observed obtained oxidation oxyanions peroxide persulphate phenyl phenylacetic acid phosphate plots polarisability proton pyridine R. J. W. Le Fèvre R. O. C. Norman radical anion rate constants ratio reaction reactivity rearrangement reduction ring rotation similar sodium solution solvent solvolysis spectra spectrum splitting constants steric structure substituent sulphate radical anion Table temperature tetraphenylallene thiophen titanium(III values Δε ΣΔε/Σω