The relationship between carbon-13 substituent chemical shifts and proton coupling constants in aza-aromatic systems
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An equation which relates the ortho carbon-13 substituent chemical shift α-SCS in aza-aromatics to the ortho proton-proton coupling constant 3J(HH) in the corresponding carbocyclic compound is derived from experimental data. The implications for N-N bond fixation in diaza-aromatics are discussed. When the equation is applied to 2-substituted pyridines, an electronegativity parameter must be included to explain the results.
1974 ◽
Vol 29
(12)
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pp. 1902-1906
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1983 ◽
Vol 48
(7)
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pp. 1829-1841
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1967 ◽
Vol 45
(10)
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pp. 1111-1118
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1968 ◽
Vol 90
(1)
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pp. 141-147
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