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Page 3071
... measured on a Unicam S.P. 700 spectrophotometer using 1 - cm . cells above , and 0.1 - cm . cells below , 220 mμ . The measurement of low extinction coefficients at short wavelengths calls for very pure materials and reliable ...
... measured on a Unicam S.P. 700 spectrophotometer using 1 - cm . cells above , and 0.1 - cm . cells below , 220 mμ . The measurement of low extinction coefficients at short wavelengths calls for very pure materials and reliable ...
Page 3405
... measured after suitable dilution . The chromium ( vi ) removed from the aqueous phase ( and hence the concentration in the equilibrium organic phase ) was determined by thiosulphate titration . The mean of three such experiments gave Є ...
... measured after suitable dilution . The chromium ( vi ) removed from the aqueous phase ( and hence the concentration in the equilibrium organic phase ) was determined by thiosulphate titration . The mean of three such experiments gave Є ...
Page 3684
... measured to 0 · 1 % ) and capacitance were balanced separately . Reactions were carried out at +35 , +25 , 0 , −20 ... measured to ± 0.01 ° with standardised mercury - in - glass thermometers . Temperatures below 0 ° were measured to ...
... measured to 0 · 1 % ) and capacitance were balanced separately . Reactions were carried out at +35 , +25 , 0 , −20 ... measured to ± 0.01 ° with standardised mercury - in - glass thermometers . Temperatures below 0 ° were measured to ...
Contents
NO PAGE | 2842 |
Mechanism of benzidine and semidine rearrangements Part XV A collective | 2864 |
By DAVID PETERS | 2901 |
Copyright | |
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absorption acetic acid acetone added adduct alcohol alkyl Amax Amer anhydride aqueous aromatic atom atomic orbitals band benzene bond bromine Calc carbon carbonyl cation CH₂ Chem chloroform chromatography cm.¹ complex compound concentration constant crystallised cyclohexane decomp decomposition derivatives dilute dimethyl distilled dried effect electron ester ethanol ether evaporated extracted filtered filtrate formation formed Found fraction gave give heated hydride hydrogen hydrolysis hydroxide infrared infrared spectrum iodide ionisation energies isomer kinetic light petroleum b. p. lithium lithium aluminium hydride mechanism methyl mixed m. p. mixture mole molecular molecule nitric oxide nitrogen Nujol observed obtained oxidation perchlorate phenyl potassium prepared proton pyridine reaction rearrangement reduced refluxed requires residue room temperature salt sodium sodium hydroxide solid solution solvent spectra steric steric effect structure substitution sulphate Table thionyl chloride transition ultraviolet values Vmax yield