What absorbs at 2969 cm⁻¹ in an FTIR spectrum?
A band near 2969 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
Possíveis atribuições de grupos funcionais
| Grupo funcional | Fatos de suporte | Fontes citadas | Maior confiança |
|---|---|---|---|
| Alkyl C-H | 4 | 4 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
A classificação reflete a evidência acumulada da literatura, não uma única regra autoritária. Sempre confirme com o contexto da sua amostra.
Literatura por trás destas atribuições
-
Alkyl C-H confiança 1,0
“The C-H stretching band on neighboring CHCl groups at 2969 cm-1 disappeared after the hydrothermally dechlorinated products.”
Understanding Hydrothermal Dechlorination of PVC by Focusing on the Operating Conditions and Hydrochar Characteristics DOI: 10.3390/app7030256 -
Aromatic ring confiança 1,0
“Meanwhile, the bands assigned to PA-5 2969 cm-1 at 3039, 2969 and 2868 are due to aromatic rings 1595”
Liquid phase synthesis of aromatic poly(azomethine)s, their physicochemical properties, and measurement of ex situ electrical conductivity of pelletized powdered samples DOI: 10.1080/15685551.2016.1231042 -
Hydroxyl (O-H) confiança 1,0
“The peak at 2968.79 is stretching cm-1 for O-H.”
Biodegradation of Azo Dye Methyl Red by Pseudomonas aeruginosa: Optimization of Process Conditions DOI: 10.3390/ijerph19169962 -
Alkyl C-H confiança 1,0
“The FTIR spectrum of the control membrane (Figure 5) Comparing to the controle membrane, the Tg of PSf/MC displayed the characteristics absorption peaks of all the bonds, cm-1 membranes is slightly lower, this may be due to the presence in”
Nadour 等 - 2017 - Effects of Methylcellulose on the Properties and M DOI: 10.1590/1980-5373-MR-2016-0544 -
Carbonyl (C=O) confiança 1,0
“cm-1 at 1715 and 1771 may be formed due to stretching of two carbonyl (C=O) groups in the aceclofenac Preparation of Aceclofenac TiO Kneaded mixture 2 structure.19,20 cm-1 The peak at 2969 in both pure drug”
Nandi 等 - 2020 - Quantitative Estimation of Tabletability of Aceclo DOI: 10.5530/ijper.54.1.8 -
Carbonyl (C=O) confiança 1,0
“XRD Study ing of two carbonyl (C=O) groups in the drug structure.27,28 cm-1 The peak at 2969 may be because of symmetric stretching of CH2 in both pure drug and X ray diffraction data is portrayed in Figure 3.”
Nandi 等 - 2020 - Influence of TiO2 on Mucosal Permeation of Aceclof DOI: 10.17344/acsi.2020.6129 -
Alkyl C-H confiança 1,0
“LLM confirmed rule peak-group candidate”
Effects of Various Types of Expandable Graphite and Blackcurrant Pomace on the Properties of Viscoelastic Polyurethane Foams DOI: 10.3390/ma14071801 -
Alkyl C-H confiança 1,0
“The positive values of PC1 loading in the lipid region (Figure 4B) at 2969 cm-1 cm-1 H-CO), ν (ν ν (assigned to of 2941 of CH [27]), 2908 (assigned to of CH and CH of as”
FTIR Microspectroscopy for the Assessment of Mycoplasmas in HepG2 Cell Culture DOI: 10.3390/app10113766
Tem um espectro com esta banda?
Carregue seu espectro FTIR e obtenha um relatório de interpretação completo — atribuições de picos com citações da literatura, correspondências de biblioteca e uma cadeia de evidências com nível de confiança — em segundos.
Interpretar meu espectro