Sometimes, carbon attached to nitrogen atom show very low intensity (and broad) peak in 13C NMR spectrum. Why is it so? Please share valid references?

I synthesized some 1,2,4-triazoles and the two quaternary carbons of the 1,2,4-triazole ring were appeared as very low intensity (even broad) peaks in 13C NMR spectra. This observation is with the...

07 September 2023 2,122 3 View