N n bond — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where N n bond 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 8 cited sources
Quick answer
N n bond 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 N n bond
| Wavenumber (cm⁻¹) | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| 1392 | 2 | 2 | 1.0 |
| 1430 | 2 | 1 | 1.0 |
| 1030 | 2 | 1 | 1.0 |
| 1620 | 2 | 1 | 1.0 |
| 1575 | 1 | 1 | 1.0 |
| 1521 | 1 | 1 | 1.0 |
| 1535 | 1 | 1 | 1.0 |
| 1538 | 1 | 1 | 1.0 |
| 1404 | 1 | 1 | 1.0 |
| 1642 | 1 | 1 | 1.0 |
| 3464 | 1 | 1 | 1.0 |
| 1021 | 1 | 1 | 1.0 |
| 873 | 1 | 1 | 1.0 |
| 1276 | 1 | 1 | 1.0 |
| 3259 | 1 | 1 | 1.0 |
| 2350 | 1 | 1 | 1.0 |
| 1100 | 1 | 1 | 1.0 |
| 900 | 1 | 1 | 1.0 |
| 802 | 1 | 1 | 1.0 |
| 1500 | 1 | 1 | 1.0 |
| 1111 | 1 | 1 | 1.0 |
| 3345 | 1 | 1 | 1.0 |
| 1588 | 1 | 1 | 1.0 |
| 2141 | 1 | 1 | 1.0 |
| 1490 | 1 | 1 | 1.0 |
| 1530 | 1 | 1 | 1.0 |
| 1643 | 1 | 1 | 1.0 |
| 1641 | 1 | 1 | 1.0 |
| 2974 | 1 | 1 | 1.0 |
| 813 | 1 | 1 | 1.0 |
Showing the 30 best-supported peaks of 94 total for N n bond.
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
-
3535 cm⁻¹ confidence 1.0
“The Fourier transform infrared (FTIR) spectra of these coesite crystals taken in the OH cm(cid:3)1, stretching region consist of two sharp peaks at 3535 and 3500 which were assigned previously to two different boron-based n n point defects,”
Deon 等 - 2009 - Coupled boron and hydrogen incorporation in coesit DOI: 10.1127/0935-1221/2009/0021-1843 -
2500 cm⁻¹ confidence 1.0
“Moreover, the broad peak at 2500 and 3500 cm corresponding to N N-H of amines and O-H of carboxylic was removed in this sample indicating their successful”
Covalent diphenylalanine peptide nanotube conjugated to folic acid/magnetic nanoparticles for anti-cancer drug delivery DOI: 10.1016/j.jddst.2017.06.005 -
3020 cm⁻¹ confidence 1.0
“Band strength and integrated cross-sections missing bands are (3020/3009 (3009/ 2 3 cm(cid:3)1), cm(cid:3)1), cm(cid:3)1) n n Band strength is an important spectroscopic parameter 2968 (2999/2968 (2917/2917 4”
Temperature-dependent absorption cross-section measurements of 1-butene (1-C4H8) in VUV and IR DOI: 10.1016/j.jqsrt.2012.09.014 -
490 cm⁻¹ confidence 1.0
“(cm(cid:2)2) K Reference Bond Mode Wavenumber (cm(cid:2)1) symmetric stretching 490 - [15] Si-N N-Si3 Si-H Si-H wag-rocking”
Effect of PECVD silicon oxynitride film composition on the surface passivation of silicon wafers DOI: 10.1016/j.solmat.2011.09.052 -
1550 cm⁻¹ confidence 1.0
“The peak at 1550 region is the amide tration was 0.1 mg/ml, encapsulation efficiency was C-N N-H II band and is due to or stretching, and highest at 87.44%.”
Fabrication of pristine electrospun kafirin nanofiber mats loaded with thymol and carvacrol DOI: 10.1007/s10853-020-05663-7 -
2390 cm⁻¹ confidence 1.0
“6b shows that one adsorption peak at 3124 was cm-1 visible in the (NH 4) 3PO FTIR spectrum, and the adsorption peaks near 2390 and 2211 were caused 4 by N-N vibrations, which were related to the absorption peaks of N-H groups.”
Ibrahim 等 - 2023 - Role of ammonium phosphate in improving the physic DOI: 10.37190/ppmp/161510 -
2020 cm⁻¹ confidence 1.0
“However, two distinct peaks at 2020 and 1668 emerge in the FT-IR spectra of PAN fibers after irradiation that correspond to the C=C=N (ketenimine) and C=N-N=C conjugation groups.”
Liu 等 - 2020 - Structure and tensile properties of carbon fibers DOI: 10.1007/s10853-019-04182-4 -
2012 cm⁻¹ confidence 1.0
“The peakposition n n n 2012.”
Long 等 - 2012 - From synthetic to biogenic Mg-containing calcites DOI: 10.1039/c2cp22453d
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