Journal of the Chemical Society, Part 1The Society., 1947 |
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Page 151
... molecule and is perpendicular to L ; N is the normal to the molecular plane . The co - ordinates of the atoms with respect to these molecular axes are given in Table III . Atom TABLE III . Co - ordinates of atoms with respect to molecular ...
... molecule and is perpendicular to L ; N is the normal to the molecular plane . The co - ordinates of the atoms with respect to these molecular axes are given in Table III . Atom TABLE III . Co - ordinates of atoms with respect to molecular ...
Page 358
... molecular structure of pyrene has been determined by quantitative X - ray analysis . The molecular arrangement is more complicated than in anthracene or coronene because the unit cell contains four molecules and these do not coincide ...
... molecular structure of pyrene has been determined by quantitative X - ray analysis . The molecular arrangement is more complicated than in anthracene or coronene because the unit cell contains four molecules and these do not coincide ...
Page 362
... molecular centres at approximately ( xp = 1.70 A. , Yp = 1.16 A. ) from the centre of symmetry . Further ... molecular axes L and M [ Fig . 2 ( b ) ] and their perpendicular , N , make with the a , b , and c ' crystallographic axes ( c ...
... molecular centres at approximately ( xp = 1.70 A. , Yp = 1.16 A. ) from the centre of symmetry . Further ... molecular axes L and M [ Fig . 2 ( b ) ] and their perpendicular , N , make with the a , b , and c ' crystallographic axes ( c ...
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Common terms and phrases
acetic anhydride acetone acetyl added alkaline Amer amidine amine ammonia ammonium aqueous sodium atoms benzene boiling bromide Calc CH₂ charcoal Chem chloroform colourless needles compound concentrated hydrochloric acid cooled crystallised crystallised from alcohol crystals cyanide D.Sc decomp derivative diazotised dilute dissolved distilled dried ester experimental extracted with ether filtered filtrate formed Found fraction gave give m. p. H₂O heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated light petroleum m. p. and mixed methanol Methiodide method methyl alcohol minutes mixed m. p. molecular molecule nitration nitric acid obtained oxidation pale yellow petroleum b. p. phenyl picrate polymer polymerisation potassium precipitate prepared prisms pyridine reduced pressure refluxed removed requires residue room temperature salt separated sodium carbonate sodium hydroxide sodium nitrite solid soluble solvent stirred structure substance sulphate sulphide sulphone sulphuric acid washed yellow needles yield