Quarterly Journal of the Chemical Society of London |
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Page 81
... atom . These observations were interpreted1 as indicating that the molecules cannot take up conformations with the N - methyl groups near an o - methyl or an o - bromine atom , or with the amino - hydrogen atom near to an o - methyl ...
... atom . These observations were interpreted1 as indicating that the molecules cannot take up conformations with the N - methyl groups near an o - methyl or an o - bromine atom , or with the amino - hydrogen atom near to an o - methyl ...
Page 691
... atomic orbitals of the central atom and the л - orbitals of the cyclopenta- dienyl radical or , in the case of a 6 - complex , simply over the o - orbital of a carbon atom of the cyclopentadienyl ring . In a satisfactory quantitative ...
... atomic orbitals of the central atom and the л - orbitals of the cyclopenta- dienyl radical or , in the case of a 6 - complex , simply over the o - orbital of a carbon atom of the cyclopentadienyl ring . In a satisfactory quantitative ...
Page 700
... atom will be offset by the anti - bonding effect of overlap of the filled a cyclo- pentadienyl orbitals with the filled ns - orbital of the central atom ; Table 2 indicates that both interactions are considerable for the elements of ...
... atom will be offset by the anti - bonding effect of overlap of the filled a cyclo- pentadienyl orbitals with the filled ns - orbital of the central atom ; Table 2 indicates that both interactions are considerable for the elements of ...
Contents
No PAGE | 7 |
The reaction of molybdenum v chloride with some aliphatic amines | 24 |
NO PAGE | 29 |
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absorption acetic acid acetone added alcohol alkaline alkyl Amer amine anhydride aromatic ation atom band benzene bond bromide Calc carbonyl CH₂ Chem chloride chloroform chromatography cm.¹ column complex compounds concentration constant crystallised cyclic decomp derivatives dilute dioxan disaccharide distilled dried elution equiv ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtered formation formed Found fraction frequencies gave give H₂O heated hydrochloric acid hydrolysis hydroxyl infrared infrared spectra iodide isolated isomers ketone lactone light petroleum b. p. limonin lithium aluminium hydride m. p. and mixed methyl mixed m. p. mixture mole molecules needles nitrogen obtained oxidation perchlorate phenol phosphate pipecolic acid potassium precipitate prepared prisms protons pyridine reaction reduced refluxed requires residue room temperature salt sodium hydroxide solid solution solvent spectrum structure substituted sulphuric acid Table ultraviolet values washed yield