What absorbs at 1258 cm⁻¹ in an FTIR spectrum?
A band near 1258 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
빠른 답변
A band near 1258 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
가능한 작용기 할당
| 작용기 | 지원 사실 | 인용 출처 | 최고 신뢰도 |
|---|---|---|---|
| Alkyl C-H | 6 | 6 | 1.0 |
| C-O single bond | 4 | 4 | 1.0 |
| Methacrylate | 4 | 4 | 1.0 |
| Amide | 4 | 4 | 1.0 |
| Acetate | 4 | 4 | 1.0 |
| Hydroxyl (O-H) | 4 | 4 | 1.0 |
| Silicon carbon | 3 | 3 | 1.0 |
| Secondary amine | 3 | 3 | 1.0 |
| Methoxy (OCH3) | 3 | 3 | 1.0 |
| Silicon (Si) | 2 | 2 | 1.0 |
| N h | 2 | 2 | 1.0 |
| C n single bond | 2 | 2 | 1.0 |
| C c single bond | 2 | 2 | 1.0 |
| Ketone | 1 | 1 | 1.0 |
| Ester | 1 | 1 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.
가능한 재료
| 재료 | 지원 피크 | 겹치는 그룹 | 인용 출처 |
|---|---|---|---|
| PET | 1258, 1408, 800 | Methacrylate, Alkyl C-H, C-O single bond | 1 |
| Polystyrene | 1258, 1020, 1600 | Alkyl C-H, Methacrylate, Amide | 1 |
| Polyethylene | 1258, 1737, 1720 | Alkyl C-H, Methacrylate, C-O single bond | 1 |
| collagen | 1258, 1408, 1660 | Amide, Methacrylate, Alkyl C-H | 1 |
| hydroxyapatite | 1258, 1620, 1639 | Alkyl C-H, Methacrylate, Amide | 1 |
동일한 문헌 풀이 이 밴드와 하나 이상의 추가 특징 피크를 지원하는 경우에만 물질이 표시됩니다.
스펙트럼 로직
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1258 cm⁻¹ is usually not enough for material identification by itself.
실제 사용
이러한 유형의 질의는 고분자 식별, 미지 플라스틱 스크리닝, QC 문제 해결, 재활용 재료 검증 및 문헌 기반 피크 할당 검토에서 일반적입니다.
일반적인 실수
- 하나의 고립된 밴드를 재료의 증거로 취급하고 최소 하나 또는 두 개의 지원 피크를 확인하지 않는 것.
- 겹침 무시: 여러 작용기가 동일한 파수 근처에서 기여할 수 있습니다.
- 첨가제, 혼합물, 산화 또는 오염이 스펙트럼을 왜곡할 수 있는 경우 검증을 건너뜁니다.
검증 조언
모호성이 남아 있는 경우, 특히 혼합물, 분해된 시료 및 충전 폴리머의 경우 DSC, GC-MS 또는 TGA로 가설을 검증하십시오.
이 할당의 배경이 되는 문헌
-
Hydroxyl (O-H) 신뢰도 1.0
“1 showed the overall pattern of both spectra which indi1265cm(cid:3)1 cm(cid:3)1 addition, peaks around and 1258 were attributed cated the basis absorption of mid infrared for the raw material of C@O to bond of flavonoids, steroidal and tri”
Chen 等 - 2014 - Determination of chemical changes in Isatis indigo DOI: 10.1016/j.saa.2014.01.048 -
C c single bond 신뢰도 1.0
“1074 stretching 1113 C-H wagging at benzoic ring C-N stretching in imidazole ring and C-C stretching between 1258”
Degradation of Losartan Potassium Highlighted by Correlated Studies of Photoluminescence, Infrared Absorption Spectroscopy and Dielectric Spectroscopy DOI: 10.3390/pharmaceutics14112419 -
Alkyl C-H 신뢰도 1.0
“The comparison purpose , all the FTIR spectra in DHOA system was spectra of pure TBP in MeOH and ACN showed the phosphoryl cm-1, normalized with C-H bending at 1376 which do not shift cm-1, peak at 1258±1 which appeared very close to the ba”
Verma 等 - 2018 - Structural investigations on uranium(VI) and thori DOI: 10.1039/C7NJ04460G. -
Silicon carbon 신뢰도 1.0
“and Si-CH deformation band at 1258 Similarly the intensity of those bands”
Thermal and surface properties of hybrid materials obtained from epoxy-functional urethane and siloxane DOI: 10.1007/s00289-015-1545-7 -
Amide 신뢰도 1.0
“X-ray scatis cm(cid:2)1 C-N bending vibration, the band centered at 1258 to the tering measurements suggest the self-assembling of disordered article cm(cid:2)1 C-O stretching vibration and the sharp band at 1077 to the Article.”
Design of a fluorescent and clickable Ag38(SRN3)24 nanocluster platform: synthesis, modeling and self-assembling DOI: 10.1039/d1na00090j -
Acetate 신뢰도 1.0
“Comparative ATR/FTIR spectra recorded for (a) V1 modified with different metal fillers and (b) V2 modified with different metal fillers However, it should be noted that the addition of metal powders leads to a general change in the shape cm”
Caramitu 等 - 2022 - Physico-chemical Characterization of Paint Films w DOI: 10.37358/Mat.Plast.1964 -
N h 신뢰도 1.0
“1258 This absorption band appears due to CC and CN stretching, NH bending and CH bending vibrations, but also OH deformation and CO stretching vibration interactions.”
Spectroscopic Investigations of Porphyrin-TiO2 Nanoparticles Complexes DOI: 10.3390/molecules28010318 -
Amide 신뢰도 1.0
“cm-1 ν(CN) δ(NH) The vibrations at 1258 correspond to amide III, and are attributed to and from the”
Drobota 等 - 2020 - Preparation and Characterization of Electrospun Co DOI: 10.3390/ma13183961
이 밴드가 있는 스펙트럼이 있나요?
FTIR 스펙트럼을 업로드하면 몇 초 안에 전체 해석 보고서(문헌 인용이 포함된 피크 할당, 라이브러리 매칭, 신뢰도 평가 증거 체인)를 받을 수 있습니다.