The stereochemical dependence of the vicinal 13C14N coupling constant as a constitutional probe

Abstract The magnitudes of 13C14N coupling constants have been measured in 12 rigid or anancomeric (biased) tetraalkylammonium iodides. The one‐bond coupling is typical for the degree of substitution of the carbon atom and the geminal coupling is very small. Vicinal couplings depend on the dihedral angle and other factors.