Thread:Comparison of HN and CH coupings (2)

I'm not telling about the absolute value, but for a given gyromagnetic ratio of N vs the one of C, the coupling to the proton is stronger is the case of NH than the one of CH, if N had the same gyromagnetic ratio as the carbon.

2.5*gC=gN

the JCH should be 220 Hz, and not less that 200 Hz, if the electronic configuration of the carbon was the same as the one of nitrogen.