CORRELATION OF PROTON CHEMICAL SHIFTS OF METHYLENE GROUPS WITH ELECTRONEGATIVITIES OF ATOMS OF SULFUR, NITROGEN AND OXYGEN IN ORGANIC COMPOUNDS FOR SUBSTITUTES

E.A.Agayeva, G.M.Jafarov, R.M.Salimov, R.M.Agayeva, D.A.Aliyeva

The NMR ¹H-spectrums of a series of organic compounds containing atoms of sulfur, nitrogen and oxygen in their composition have been studied. There have been calculated correlation data connecting electronic density of heteroatoms with contribution into a value of electronegativites, which will considerably increase on the account of p-electrons. It is shown that chemical shifts of methylene protons cannot be described by independent local contributions and they are determined mainly by electronegativity of he-teroatom.

Keywords : proton chemical shifts, electronegativity, linear dependence, methylene groups

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