What absorbs at 1350 cm⁻¹ in an FTIR spectrum?
A band near 1350 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Alkyl C-H | 5 | 4 | 0.9 |
| Carboxyl (COOH) | 2 | 2 | 0.9 |
| Boron nitrogen | 1 | 1 | 1.0 |
| Borate | 1 | 1 | 0.95 |
| Fluorine (C-F) | 1 | 1 | 0.9 |
| N-O bond | 1 | 1 | 0.9 |
| Alkene (C=C) | 1 | 1 | 0.9 |
| Nitrate | 1 | 1 | 0.9 |
| C-O single bond | 1 | 1 | 0.9 |
| Nitrogen heterocycle | 1 | 1 | 0.8 |
| Imide | 1 | 1 | 0.7 |
| Aromatic ring | 1 | 1 | 0.7 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Boron nitrogen confidence 1.0
“large absorption band at ~1350 attributed to in-plane stretching vibration of B-N and B-N-B bonds”
Jalaly 等 - 2017 - A novel, simple and rapid route to the synthesis o DOI: 10.1038/s41598-017-03794-7 -
confidence 0.95
“Text states 'two peaks at 1350 and 1580 belong to amorphous sp2-bonded carbon'.”
Li 等 - 2010 - Synthesis and infrared transmittance of curved sur DOI: 10.4028/www.scientific.net/MSF.663-665.320 -
Borate confidence 0.95
“Text: 'absorption band at 1350 - 1364 was assigned to the stretching vibration of the B-O of trigonal (BO3) units'”
Nidzam 等 - 2022 - Comparison Study of Elastic, Physical and Structur DOI: 10.21203/rs.3.rs-772802/v1 -
confidence 0.9
“Explicit assignment: D band at 1350 cm-1”
Diaz-Galvez 等 - 2019 - Specific capture of glycosylated graphene oxide by DOI: 10.1039/c8ra09732a -
C-O single bond confidence 0.9
“Explicit assignment in text”
Felipe Tirado 等 - 2017 - EVALUATION OF THE COAGULANT CAPACITY OF STARCH OBT DOI: 10.20937/RICA.2017.33.esp01.11 -
confidence 0.9
“Explicit assignment: cm-1 at ~1350 (D-line).”
Hussain 和 Pal - 2007 - Synthesis of composite films of mixed Ag-Cu nanocr DOI: 10.1016/j.apsusc.2006.07.074 -
confidence 0.9
“Assigned to D-band due to defective carbon vibrations.”
Mugadza 等 - 2019 - Conversion of residue biomass into value added car DOI: 10.1007/s10853-019-03800-5 -
confidence 0.9
“Text: 'the BCl 2N peaks at 1350 and 2170'”
Travers 等 - 1999 - Low-temperature matrix isolation studies of BCl(N- DOI: 10.1021/jp991898l
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