What absorbs at 1147 cm⁻¹ in an FTIR spectrum?
A band near 1147 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 6 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Alkyl C-H | 2 | 2 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Carbohydrate | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
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Metal oxygen confidence 1.0
“of C-O-C at 1147 and Fe-O stretching at 542 The maximum Cr(IV) removal efficiency of 91.8% was recorded at an initial Cr(VI) concentration of 40 mg/L, pH of 3, adsorbent dose of 100 mg/100 mL, and a contact time of 90 min, whereas the minim”
Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater DOI: 10.1007/s13201-023-01880-y -
Carbohydrate confidence 1.0
“The bands ranging from 1147 to - 1 1100 cm of honey powders may be due to carbohydrate structure and”
Exploiting maltodextrin and whey protein isolate macromolecules as carriers for the development of freeze dried honey powder DOI: 10.1016/j.carpta.2021.100040 -
Alkyl C-H confidence 1.0
“and sonication The other characteristic bands were observed at wavenumbers of around 2923 cm-1 assigned to -CH stretching vibrational modes bands and 1147, 1078 and 990 associated with the stretching 2”
Production and characterization of starch nanoparticles by mild alkali hydrolysis and ultra-sonication process DOI: 10.1038/s41598-020-60380-0 -
Alkyl C-H confidence 1.0
“Peak at 1147 is attributes to CH bending and the peak at 1179 shows C-O-C bending.”
Bhattacharyya 等 - 2017 - Metallization and APPJ treatment of bismaleimide DOI: 10.1155/2010/987357 -
Aromatic ring confidence 1.0
“The symmetric stretching is observed at a characteristic band at 1147 where Ar cm-1 Ar-O-Ar corresponds to aromatic.”
Functionalized KIT-6/Polysulfone Mixed Matrix Membranes for Enhanced CO2/CH4 Gas Separation DOI: 10.3390/polym12102312 -
C c single bond confidence 1.0
“C-O-C glycosidic linkage vibration (Sym) 1127 C-O-C bridging vibration 1147 C-C ring vibration 1292”
Cuiffo 等 - 2021 - Thermochemical degradation of cotton fabric under DOI: 10.1186/s40691-021-00263-8
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