What absorbs at 1223 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 1223 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

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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 1223 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.
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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

• Aromatic ring 신뢰도 1.0

  “cm-1, 2950 to 2840 the aromatic ring CH band at cm-1, cm-1 1223 and a peak near 490 (Fig.”

  Calderon 等 - 2011 - Chemical Differences in Soil Organic Matter Fracti DOI: 10.2136/sssaj2009.0375
• Acetate 신뢰도 1.0

  “The 1223 band was assigned to C-O vibrations.”

  Can 等 - 2023 - Choline Chloride-Based Deep Eutectic Solvent-Treat DOI: 10.3390/f14030569
• N-O bond 신뢰도 1.0

  “3 here) The IR spectrum of original sPS film showed that there is no absorption at 1223 cm-1 which is one of the characteristic trans planar conformation bands of mesophase.”

  Investigation on the overlapping bands of sydiotactic polystyrene by using 2D-IR spectroscopy DOI: 10.1016/j.molstruc.2016.03.103
• Acetate 신뢰도 1.0

  “Addition it is observed by an increase of intensity of and 1223cm-1, C-O of 6% pMDI resulted in less weight less than the addition of respectively, by absorptions at 1700 and 2% pMDI and 4% pMDI, in the temperature range between increasing”

  El-Shekeil 等 - 2012 - Effect of pMDI isocyanate additive on mechanical a DOI: 10.1177/0021998310385030)
• Acetate 신뢰도 1.0

  “C=O bending in carboxylic esters and the band at 1223 In particular, silver does exist in nature especially in leadascribable to C-O stretching in carboxylic esters (Bonizzoni based ores, so that its production as pure metal required cuet a”

  The combined use of SEM-EDX, Raman, ATR-FTIR and visible reflectance techniques for the characterisation of Roman wall painting pigments from Monte d’Oro area (Rome): an insight into red, yellow and pink shades DOI: 10.1007/s11356-021-15085-w
• Acetate 신뢰도 1.0

  “cm-1 Furthermore, PC1 was also negatively correlated with the regions at 2929 and 2854 (Ccm-1 H of aliphatic methylene), 1223 (C-O stretching and CH deformation in polysaccharides and lignin, N-H rocking and C-O stretching in amino acids, A”

  Huang 等 - 2021 - Prediction of biochemical methane potential of urb DOI: 10.1016/j.scitotenv.2021.147959
• Hydroxyl (O-H) 신뢰도 1.0

  “The peaks between ( cm-1 e 1222.87 and 1145.72 confirmed -OH functional 0.25 c n group of adsorbed moisture and peaks between 1078.21”

  Synthesis, characterization and application of novel 1, 3-bis[(furan-2-l)methylene]thiourea functional dye on wool and cotton fabrics DOI: 10.1007/s42452-020-03653-7
• Acetate 신뢰도 1.0

  “Additionally, a strong and intense band given by the cm-1 phenolic C-O stretching between 1223 and 1208 was detected [5,24-28,30].”

  What about Phenol Formaldehyde (PF) Foam in Modern-Contemporary Art? Insights into the Unaged and Naturally Aged Material by a Multi-Analytical Approach DOI: 10.3390/polym13121964