What absorbs at 1273 cm⁻¹ in an FTIR spectrum?
A band near 1273 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 4 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Lignin | 1 | 1 | 1.0 |
| Nitrate | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 0 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
Carbohydrate confidence 1.0
“microfibrils.Thepreferred pulpcharacteristicsfor paper productionare Moreover, the characteristic bands for amorphous cellulose at the presence of long fibres with a large diameter that provide me897cm-1, 1273cm-1, 1370cm-1 1430cm-1 and in”
Exploring the lignolytic potential of a new laccase producing strain Kocuria sp. PBS-1 and its application in bamboo pulp bleaching DOI: 10.1016/j.ibiod.2019.104726 -
Alkyl C-H confidence 1.0
“The C-H bending vibration at 1273”
Xiao 等 - 2020 - Preparation and characterization of broken-rice st DOI: 10.1016/j.ijbiomac.2020.05.182 -
Nitrate confidence 1.0
“cm(cid:3)1 a June site.48,49 peaks at 1273 Lewis acidic This indicated that the SO and 1122 with the peak at 1273 under (Ce,La)CO 3F catalyst has an abundance of acidic sites on its attributed to the monodentate nitrate species, and the pea”
Study on the mechanism of synthetic (Ce,La)CO3F sulfuric acid acidification and NH3-SCR loaded with Mn and Fe DOI: 10.1039/d1ra02788c -
Lignin confidence 1.0
“The peak at 1273 was caused by guaiacyl lignin.”
Varnagiryte-Kabasinskiene 等 - 2021 - Physical and Chemical Changes in Hydrothermally Mo DOI: 10.3390/f12121771
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