What absorbs at 677 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 677 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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가능한 재료

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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 677 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

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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

• Borate 신뢰도 1.0

  “Though the IR band at 677 be assigned to the bending of B-O-B linkages in the pure borate glassy network, in our borotellurite”

  Lakshminarayana 等 - 2019 - Borotellurite Glasses for Gamma-Ray Shielding An DOI: 10.1007/s11664-018-6810-8
• 신뢰도 1.0

  “Samples were and 853 The peak at 677 is associThis N-H prepared by dispersion in methanol and transferred on to holy ated with bending.”

  Magee 等 - 2023 - Silane functionalization of WS2 nanotubes for inte DOI: 10.1039/d3nr00583f
• Metal oxygen 신뢰도 1.0

  “The cm(cid:2)1 is associprominent absorption peak at 431 ated with the fundamental Zn-O stretching mode.40,41 cm(cid:2)1, The other peaks observed at 677 cm(cid:2)1, cm(cid:2)1,”

  Pandey 等 - 2016 - Deposition and Characterization of AlZnO Thin Fil DOI: 10.1007/s11664-016-4750-8
• 신뢰도 1.0

  “The FTIR analysis revealed a new peak at about 677 which indicates the formation of C-Cl groups in the used membranes.”

  Rupiasih 等 - 2018 - Study on Transport Properties of Chitosan Membrane DOI: 10.5614/j.math.fund.sci.2018.50.2.6
• Acetate 신뢰도 1.0

  “The existence of polymorph A of SAC is indicated by the presence of a peak at cm-1, 677 which is associated with a distortion of the O-C=O bond angle [43].”

  The Influence of Emulsifiers on the Physiochemical Behavior of Soy Wax/Rice Bran Oil-Based Oleogels and Their Application in Nutraceutical Delivery DOI: 10.3390/gels9010047
• 신뢰도 1.0

  “the S-O stretching vibration at 677 Finally, it can be clearly identified all the bands cm-1, 2912 cm-1 and 2849 cm-1, corresponding to the alkyl C-H to the paraffin: at 2954 cm-1, cm-1 cm-1, belonging to the paraffin: at 2954 2912 and 2849”

  Study of Melamine-Formaldehyde/Phase Change Material Microcapsules for the Preparation of Polymer Films by Extrusion DOI: 10.3390/membranes12030266
• 신뢰도 1.0

  “ence of moisture, and at 1120 cm-1 longitudinal Si-O stretching, between 1000 cm-1 and 1030 cm-1 Si-O stretching due to the presence of quartz, O-H folding at 911 cm-1 from internal hydroxyl, Si-O folding at 753 cm-1, perpendicular stretchi”

  Development of an Epoxy Matrix Hybrid Composite with Astrocaryum Aculeatum (Tucumã) Endocarp and Kaolin from the Amazonas State in Brazil DOI: 10.3390/polym15112532
• Alkyl C-H 신뢰도 1.0

  “The peaks at 677 and cm-1 2h intense peaks in the whole spectrum of values ranging 652 were found to correspond CH out-of-plane”

  Biosynthesis of silver nanoparticles from Premna serratifolia L. leaf and its anticancer activity in CCl4-induced hepato-cancerous Swiss albino mice DOI: 10.1007/s13204-014-0397-z