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- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(OpenStax)/12%3A_Structure_Determination_-_Mass_Spectrometry_and_Infrared_Spectroscopy/12.03%3A_Mass_Spectrometry_of_Some_Common_Functional_GroupsAs each functional group is discussed in future chapters, mass-spectral fragmentations characteristic of that group will be described. As a preview, though, we’ll point out some distinguishing feature...As each functional group is discussed in future chapters, mass-spectral fragmentations characteristic of that group will be described. As a preview, though, we’ll point out some distinguishing features of several common functional groups.
- https://chem.libretexts.org/Courses/Smith_College/Organic_Chemistry_(LibreTexts)/24%3A_Amines_and_Heterocycles/24.11%3A_Spectroscopy_of_AminesYou should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroat...You should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroatom gives rise to an often indistinct signal in the 1 H NMR spectrum. A smaller absorption near 3200 cm -1 (shaded orange in the spectra) is considered to be the result of interaction between an overtone of the 1600 cm -1 band with the symmetric N-H stretching band.
- https://chem.libretexts.org/Courses/can/CHEM_232_-_Organic_Chemistry_II_(Puenzo)/10%3A_Amines_and_Heterocycles/10.11%3A_Spectroscopy_of_AminesYou should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroat...You should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroatom gives rise to an often indistinct signal in the 1 H NMR spectrum. A smaller absorption near 3200 cm -1 (shaded orange in the spectra) is considered to be the result of interaction between an overtone of the 1600 cm -1 band with the symmetric N-H stretching band.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(OpenStax)/24%3A_Amines_and_Heterocycles/24.10%3A_Spectroscopy_of_AminesThis section explains how amines can be identified and analyzed using various spectroscopic methods such as infrared (IR), nuclear magnetic resonance (NMR), and mass spectrometry. Key features include...This section explains how amines can be identified and analyzed using various spectroscopic methods such as infrared (IR), nuclear magnetic resonance (NMR), and mass spectrometry. Key features include the N-H stretching vibrations in IR, the characteristic chemical shifts in NMR, and the fragmentation patterns in mass spectrometry. These methods help in determining the structure and properties of amines in both simple and complex compounds.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_III_(Morsch_et_al.)/24%3A_Amines_and_Heterocycles/24.10%3A_Spectroscopy_of_AminesYou should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroat...You should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroatom gives rise to an often indistinct signal in the 1 H NMR spectrum. A smaller absorption near 3200 cm -1 (shaded orange in the spectra) is considered to be the result of interaction between an overtone of the 1600 cm -1 band with the symmetric N-H stretching band.
- https://chem.libretexts.org/Workbench/LCDS_Organic_Chemistry_OER_Textbook_-_Todd_Trout/24%3A_Amines_and_Heterocycles/24.11%3A_Spectroscopy_of_AminesPrimary amines show a pair of bands at about 3350 and 3450 cm –1 from the symmetric and asymmetric stretching modes, and secondary amines show a single band at 3350 cm –1 . Tertiary amines have no abs...Primary amines show a pair of bands at about 3350 and 3450 cm –1 from the symmetric and asymmetric stretching modes, and secondary amines show a single band at 3350 cm –1 . Tertiary amines have no absorption in this region because they have no N–H bonds. Hydrogens on the carbon next to nitrogen are deshielded because of the electron-withdrawing effect of the nitrogen, and they therefore absorb further downfield than alkane hydrogens.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(Morsch_et_al.)/24%3A_Amines_and_Heterocycles/24.10%3A_Spectroscopy_of_AminesYou should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroat...You should note the spectroscopic similarities between amines and alcohols: both have infrared absorptions in the 3300–3360 cm −1 region, and in both cases, the proton that is attached to the heteroatom gives rise to an often indistinct signal in the 1 H NMR spectrum. A smaller absorption near 3200 cm -1 (shaded orange in the spectra) is considered to be the result of interaction between an overtone of the 1600 cm -1 band with the symmetric N-H stretching band.
