Journal of the Chemical Society

4-dideuterobenzene absorption spectrum acetic acid acetic anhydride acetone added alkaline Amer ammonia analcite aqueous sodium atoms bands benzene boiling bond bromine Calc carbon catalyst CH₂ chabazite Chem chloride chloroform colourless needles compound concentrated cooled corresponding crystallised from alcohol crystals cyanide D.Sc decomp derivative dilute dissolved distilled dried electronic origin energy ester ethanol ether evaporated excited extracted filtered filtrate fluorescence formed Found fraction fundamental frequencies gave give H₂O heated hexadeuterobenzene hydrochloric acid hydrogen hydrogen chloride hydrolysis Ingold isolated kcals ketone light petroleum method methyl alcohol mixed m. p. mixture molecule obtained oxidation peroxide phenol potassium potassium hydroxide precipitated prepared prisms pyridine reaction reduced pressure refluxed requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent spectra structure sulphide sulphuric acid symmetry transitions unsaturated upper electronic upper-state vibration washed yellow needles yield