What absorbs at 2987 cm⁻¹ in an FTIR spectrum?
A band near 2987 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
Mga posibleng pagtatalaga ng functional-group
| Grupong functional | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| Alkyl C-H | 3 | 3 | 1.0 |
| Hydroxyl (O-H) | 2 | 2 | 1.0 |
| Carbohydrate | 1 | 1 | 0.8 |
Ang pagraranggo ay sumasalamin sa naipon na ebidensya ng literatura, hindi isang solong awtoritatibong tuntunin. Palaging kumpirmahin laban sa konteksto ng iyong sample.
Literatura sa likod ng mga pagtatalagang ito
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Hydroxyl (O-H) kumpiyansa 1.0
“The peaks at 2987, cm-1 3150, and 3203 could not be confidently assigned but may O-H possibly be the result of stretching in NOH groups that”
Pena 等 - 2004 - Identification of surface species on titania-suppo DOI: 10.1021/jp0313122 -
Alkyl C-H kumpiyansa 1.0
“A small peak observed at 2987.2 is assigned to the vibrations of the stretching vibration of -CH and -CH groups indicating the presence of a small”
CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst DOI: 10.3390/catal -
Alkyl C-H kumpiyansa 1.0
“The peak at 2987 cm-1 identifies asymmetric stretching of the methyl group (C-H).”
Development, characterization and In-vitro evaluation of guar gum based new polymeric matrices for controlled delivery using metformin HCl as model drug DOI: 10.1371/journal.pone.0271623 -
Alkyl C-H kumpiyansa 1.0
“The infrared spectrum displayed doses 5, 10, 15, 20 and 25 kGy showed the main characan intense absorption peak at the wave numbers 3363 and teristic absorption bands of BCNF with slight shifts of the cm-1 which attributed to stretching val”
Biosynthesis of bacterial cellulose nanofibrils in black tea media by a symbiotic culture of bacteria and yeast isolated from commercial kombucha beverage DOI: 10.1007/s11274-022-03485-0 -
Hydroxyl (O-H) kumpiyansa 0.9
“OH- functional group at 2987 cm-1”
Caracterization and Compressive Strength of Biocomposite Hydroxyapatite-Borosilicate with Hight Temperature Sintering DOI: 10.1051/matecconf -
Carbohydrate kumpiyansa 0.8
“Hydrogen bond stretching of CH and CH of cellulose.”
Enhanced arsenic (iii) adsorption from aqueous solution by magnetic pine cone biomass DOI: 10.1016/j.matchemphys.2018.09.067
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