Amine (N-H) — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Amine (N-H) tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 7 cited sources
Quick answer
Amine (N-H) is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.
Characteristic FTIR peaks for Amine (N-H)
Spectrum logic
A functional-group assignment becomes more confident when several expected bands appear together. Use this page to find the strongest-supported peaks, then confirm that the same sample exhibits a coherent pattern rather than a single isolated hit.
Real-world usage
These pages are useful for unknown material analysis, peak explanation in reports, polymer troubleshooting, and verifying whether a candidate material family is chemically plausible.
Common mistakes
- Using one functional-group page as a complete material verdict without checking the rest of the spectrum.
- Assuming the strongest band is always the most diagnostic one.
- Forgetting that processing, additives, aging, and mixtures can shift or broaden expected peaks.
Verification advice
Use DSC, GC-MS, or TGA when several material families share similar bands or when mixture effects make the FTIR assignment uncertain.
Literature behind these assignments
-
1616 cm⁻¹ confidence 0.95
“Explicit assignment: '1616.5 for amines (N-H bend)'.”
Al-Baldawi 等 - 2020 - Role of Salvinia molesta in biodecolorization of m DOI: 10.1038/s41598-020-70740-5 -
1024 cm⁻¹ confidence 0.9
“The peak is explicitly assigned to A. fumigatus and algal-fungal pellets with specific groups.”
A rapid method for fungal assisted algal flocculation: Critical parameters & mechanism insights DOI: 10.1016/j.algal.2016.10.022 -
2360 cm⁻¹ confidence 0.9
“Text: 'broadband at 2360.48 which represents the N-H bond caused by the amines and amides'”
Habte 等 - 2019 - Synthesis of Nano-Calcium Oxide from Waste Eggshel DOI: 10.3390/su11113196 -
1323 cm⁻¹ confidence 0.9
“Text: 'Downward bands ... at around 1323-1345 cm-1 ... associated with C-N vibrational modes of amines'”
Martinez-Sanchez 等 - 2020 - Synthesis of Phosphorus-Containing Polyanilines by DOI: 10.3390/polym12051029 -
1645 cm⁻¹ confidence 0.9
“Direct assignment to chitosan.”
Electrophoretic Deposition of Chitosan/h-BN and Chitosan/h-BN/TiO2 Composite Coatings on Stainless Steel (316L) Substrates DOI: 10.3390/ma7031814 -
3467 cm⁻¹ confidence 0.8
“Stretching vibrations of amines”
Wagi 和 Ahmed - 2020 - Bacterial nanobiotic potential DOI: 10.1515/spma-2019-0001 -
3200 cm⁻¹
“Material unknown.”
Batch and Packed Bed Column Study for the Removal of Cr (VI) and Ni (II) Using Agro-Industrial Wastes DOI: 10.3390/app11199355
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