Anyway, I think the article has some educational significance and could be published after few major and minor points are taken into account: Major:
Author Response Reviewer 1The manuscript described ''The vibrational NH stretching transitions in secondary amines with intramolecular NH···O hydrogen bonds were investigated by experimental and theoretical methods, considering a large number of compounds and covering a wide range of stretching wavenumbers'' but the paper needs very significant improvement before acceptance for publication.