Quarterly Journal of the Chemical Society of London |
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Page 3571
... bond to oxygen rather than on the breaking of the old bond to halogen . The inversion of the rate order for silicon and germanium when R is changed from phenyl [ k1 ( Ge ) / k1 ( Si ) = 1 : 120 ] to isopropyl [ k1 ( Ge ) / k1 ( Si ) ...
... bond to oxygen rather than on the breaking of the old bond to halogen . The inversion of the rate order for silicon and germanium when R is changed from phenyl [ k1 ( Ge ) / k1 ( Si ) = 1 : 120 ] to isopropyl [ k1 ( Ge ) / k1 ( Si ) ...
Page 4022
... bond are the same as those in this bond in carbon dioxide , the oxygen taking 0.15 electron from the carbon . The atomic charges in the carbon - hydrogen bonds of formaldehyde also fit well with those in the carbon- hydrogen bonds of ...
... bond are the same as those in this bond in carbon dioxide , the oxygen taking 0.15 electron from the carbon . The atomic charges in the carbon - hydrogen bonds of formaldehyde also fit well with those in the carbon- hydrogen bonds of ...
Page 4065
... bond donor than 10-4м - p - nitrophenol . Solvent Effects on the Spectrum of ArM -.- The electronic transition represented by ( b ) above can be abbreviated to ArM - Ar = M . The ground state , ArM- , is a much stronger hydrogen - bond ...
... bond donor than 10-4м - p - nitrophenol . Solvent Effects on the Spectrum of ArM -.- The electronic transition represented by ( b ) above can be abbreviated to ArM - Ar = M . The ground state , ArM- , is a much stronger hydrogen - bond ...
Contents
3820 | 3468 |
The reactions of carbenes and diazoalkanes with ketones Part I The reaction | 3480 |
The SN mechanism in aromatic compounds Part XXVIII Reactivity in | 3486 |
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absorption acetic acid acetone acetonitrile acidified alcohol alumina Amax Amer anhydrous anthracene aqueous atom band benzene bond Calc carbon catalyst CH₂ Chem chloride chloroform chromatography cm.¹ Found CO₂H complex compounds concentration crystal crystallised cucurbitacin decomp decomposition derivatives diazomethane diethyl dilute dissolved distilled dried Elution enol ester ethanol ethyl acetate evaporated experimental extracted with ether filtered formation fraction gave give H₂O heated hydrochloride hydrogen chloride hydrolysis infrared infrared spectrum isolated isomer kcal./mole ketone kinetic light petroleum lithium aluminium hydride methyl methylene mixed m. p. mixture mole molecular molecule mµ ɛ needles nitrogen nitrosonium nitrosyl chloride obtained oxidation phosphate Phys potassium prepared proton pyridine ratio reaction reduced refluxed requires residue room temperature salt sodium hydrogen sodium hydroxide solid solution solvent spectra stirred structure substitution sulphide sulphuric Table tetracene tube vacuo values Vmax washed yield