Vicinal carbon‐proton spin‐spin coupling constants in monosubstituted propanes

Abstract

Abstract Analysis of single resonance 13 C‐FT NMR spectra has yielded the vicinal 13 C‐ 1 H coupling constants in monosubstituted propanes for substituents from the first row of the Periodic Table. Directly bonded 13 C‐ 1 H, vicinal 1 H‐ 1 H and some directly bonded 13 C‐ 13 C coupling constants are also reported. The influence that the substituent electronegativity of the elements from the first row of the Periodic Table exerts on the vicinal 13 C‐ 1 H coupling constant is discussed qualitatively in terms of molecular orbital theory. The effects of substituents from the first row are compared with the effects of halogen substituents.