Click here to see other posts about FT-IR Only 10 $ for interpretation of your FT-IR spectrum Payment Upon Completion Send your spectra... The N–H stretches of amines are in the region 3300-3000 cm-1. These bands are weaker and sharper than those of the alcohol O–H stretches which appear in the same region. In primary amines (RNH2), there are two bands in thi...