What absorbs at 2976 cm⁻¹ in an FTIR spectrum?
A band near 2976 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
Gán nhóm chức có thể
| Nhóm chức | Sự kiện hỗ trợ | Nguồn tham khảo | Độ tin cậy cao nhất |
|---|---|---|---|
| Alkyl C-H | 9 | 9 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
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Tài liệu tham khảo đằng sau các gán này
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Alkyl C-H độ tin cậy 1,0
“Moreover, the observed narrow bands at 26 27 cm-1 cm-1 2976.32 and 2876.39 corresponds to the C-H stretching vibrations and are probably”
Ntozakhe 等 - 2019 - Influence of nitrogen doping on TiO2 nanoparticles DOI: 10.1088/2053-1591/ab2260 -
Alkyl C-H độ tin cậy 1,0
“LLM confirmed rule peak-group candidate”
Assessment of quality of commercial hand sanitizers using Fourier transform infrared spectroscopy and gas chromatography DOI: 10.1016/j.mex.2023.102274 -
Alkyl C-H độ tin cậy 1,0
“CP presented a characteristic peak at 2976 cm-1 cm-1 cm-1 2976 (C-H stretching vibration), the peak at 1622 was due to the C=O stretching (C-H stretching vibration), the peak at 1622 cm-1 was due to the C=O stretching and 1277 cm-1 cm-1 and”
Almotairi 等 - 2022 - Design and Optimization of Lornoxicam Dispersible DOI: 10.3390/ph15121463 -
Alkyl C-H độ tin cậy 1,0
“It is also observed that the relative intensity of the two bands near 2976 and 2820 cm-1 (anti-symmetrical and symmetrical C-H stretching modes) increased with the content of 1,12-dodecanedioate (DD) in the (co)polyester backbone, as eviden”
Isosorbide and 2,5-Furandicarboxylic Acid Based (Co)Polyesters: Synthesis, Characterization, and Environmental Degradation DOI: 10.3390/polym14183868 -
Alkyl C-H độ tin cậy 1,0
“The characteristic band at 2991 cm-1 to 2976 cm-1 cm-1 cm-1 (C=C 2976 corresponds to C-H stretching vibrations, 1652 skeletal vibration), 1521”
Complex Permittivity and Electromagnetic Interference Shielding Effectiveness of OPEFB Fiber-Polylactic Acid Filled with Reduced Graphene Oxide DOI: 10.3390/ma13204602 -
Alkyl C-H độ tin cậy 1,0
“(cm-1) (cm-1) O-H 3229 3027 4 3294 3030 5 3272 3022 3 3170 3017 5 3111 2964 7 stretch =C-H 3094 3090 stretch -C-H 2976 2952 5 2942 2947 5 2971 2953 5 2953 5 2969 stretch 1738 1738”
Loarueng 等 - 2019 - Theoretical and experimental investigation of NMR, DOI: 10.24820/ark.5550190.p010.982 -
Hydroxyl (O-H) độ tin cậy 1,0
“3A) at 3299 (OH stretching) 2976, 2897 (asymmetric and symmetric C H cm-1 and 1602 (C O stretching of the carbonyl group, stretching) typical of saccharide absorption) (Juby et al., 2012).”
Raghavendra 等 - 2013 - Cellulose-polymer-Ag nanocomposite fibers for anti DOI: 10.1016/j.carbpol.2012.12.035 -
Alkyl C-H độ tin cậy 1,0
“The chemical nature of P(3HB) was confirmed by the method of FTIR cm-1 spectroscopy, the characteristic band at 2976 shows the presence of antisymmetric -CH -CH and symmetric stretching of bonds (alkanes) in the -CH and groups, which”
Comparative Characterization and Identification of Poly-3-hydroxybutyrate Producing Bacteria with Subsequent Optimization of Polymer Yield DOI: 10.3390/polym14020335
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