What absorbs at 1284 cm⁻¹ in an FTIR spectrum?
A band near 1284 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 1284 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 |
|---|---|---|---|
| Amide | 4 | 3 | 1.0 |
| Methacrylate | 2 | 2 | 1.0 |
| Acetate | 2 | 2 | 1.0 |
| C-O 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 |
| Aromatic ring | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| N h | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.
가능한 재료
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 1284 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
-
Amide 신뢰도 1.0
“Moreover, (C-N) of stretching frequencies has been cm-1 assigned at 1284 with strong absorption.”
Mohamad 等 - 2017 - Synthesis and Characterization of Methyl 4-(4-Amin DOI: 10.1063/1.5002299 -
Alkyl C-H 신뢰도 1.0
“The weak bands at 1284, 1264, cm(cid:2)1can and 1228 be attributed to the CH wagging, followed by a band at 1172 2 cm(cid:2)1, which is related to the ring deformation.”
Synthesis, crystal structure, and characterization of cyclohexylammonium tetraisothiocyanatocobaltate(II): A single-source precursor for cobalt sulfide and oxide nanostructures DOI: 10.1016/j.heliyon.2019. -
Protein 신뢰도 1.0
“LLM confirmed rule peak-group candidate”
Detection of Human Cholangiocarcinoma Markers in Serum Using Infrared Spectroscopy DOI: 10.3390/cancers13205109 -
신뢰도 1.0
“254 Theoretical and Experimental Spectroscopic Study on 2-Chloro-3-(substituted-phenylamino)-1,4-naphthoquinone Derivatives cm-1 in Figure 7 was classified as the region associated still presents intense bands at 1284 and 1130 that are with”
Dias 等 - 2022 - Theoretical and Experimental Spectroscopic Study o DOI: 10.21577/0103-5053.20220104 -
C-O single bond 신뢰도 1.0
“2 2 Characteristic bands for p-aminobenzoic acid (spectrum h) are found at 1599.4 cm-1 (NH2 scissoring cm-1 p-aminobenzoic Characteristic bands for acid (spectrum h) are found at 1599.4 (NH scissoring 2 vibration) and 1283.9 cm-1 (C-OH stre”
Garbacz 和 Wesolowski - 2018 - DSC, FTIR and Raman Spectroscopy Coupled with Mult DOI: 10.3390/molecules23092136 -
C-O single bond 신뢰도 1.0
“Compared to the cm-1 cm-1 spectrum of PA, the appearance of new bands at ~1720 (C=O, ester), ~1650 cm-1 A (C=C, aliphatic), and 1284 (ester C-O stretching) of all three MAPAs is attributed to”
Methacrylate-functionalized proanthocyanidins as novel polymerizable collagen cross-linkers – Part 1: efficacy in dentin collagen bio-stabilization and cross-linking DOI: 10.1016/j.dental.2021.04.006. -
Amide 신뢰도 1.0
“profile (1204, 1234, 1244, 1284 and 1342 The higher absorption in amide III peaks (1204, 1234 cm-1) and 1284 may be explained by the remodeling of extracellular matrix with modifications of secondary structure of the collagen fibers.”
Moreau 等 - 2020 - Analysis of Hepatic Fibrosis Characteristics in Ci DOI: 10.3390/molecules25184092 -
Aromatic ring 신뢰도 1.0
“cm(cid:1)1 C-N stretching.63 The band at 1340 arises due to The C-H deformation vibration of (aromatic) is revealed by the 2.8 Desorption and reuse experiments cm(cid:1)1 cm(cid:1)1.63 absorption bands peaking at 1284 and 1121 The Unported”
Assessment of ampicillin removal efficiency from aqueous solution by polydopamine/zirconium(iv) iodate: optimization by response surface methodology DOI: 10.1039/d0ra02061c
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.