What absorbs at 420 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 420 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 420 cm⁻¹ is usually not enough for material identification by itself.

실제 사용

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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

• 신뢰도 1.0

  “peak at 420 may be attributed to the stretching vibration of the Ni-O bond As the AC calcination temperature increased, the absorption peak decreased rapidly and then increased.”

  The preparation and characterization of the Ni-NiO/TiO2 hollow composite materials on micro-nano cellulose fibers DOI: 10.1016/j.vacuum.2018.06.044
• Metal oxygen 신뢰도 1.0

  “The corresponding cm-1 cm-1 peak to the Ce-O stretching is observed at 420 and the band at 1080 and 1250”

  Biosynthesis, characterization and cytotoxic activity of CeO2 nanoparticles DOI: 10.1016/j.ceramint.2018.04.063
• Metal oxygen 신뢰도 1.0

  “4, AZO 0%, 2%, 3% and 4% gave the same weak absorption spectras at a wavenumber of 420 cm-1 atribute as a bending of Zn-O-Zn.”

  conferenceseries.iop.org materials science and engineering open access proceedings IOP Conferences Series: Materials Science and Engineering DOI: 10.1088/1757-899X/176/1/012049
• Metal oxygen 신뢰도 1.0

  “cm-1 1403 1085 and 1040 ZnO nanodrums gives the absorption at the wavenumber of 420 which is cm-1 the vibration of Zn-O-Zn and at 3450 which is the O-H functional group.”

  The photocatalytic degradation of methylene blue using graphene oxide (GO)/ZnO nanodrums DOI: 10.1063/1.5054523
• Alkyl C-H 신뢰도 1.0

  “In this present work, the bands due to C-H in-plane ring 280cm-1 420, are assigned to C-C-C stretching and out-of-plane vibration interacting somewhat with C-C stretching vibration are vibrations respectively.”

  FTIR and FT Raman, molecular geometry, vibrational assignments, ab initio and density functional theory calculations for 1,5-methylnaphthalene DOI: 10.1016/j.saa.2010.09.002
• Metal oxygen 신뢰도 1.0

  “LLM confirmed rule peak-group candidate”

  Abd El-Moneim 等 - 2023 - XRD, FTIR and ultrasonic investigations of cadmium DOI: 10.1038/s41598-023-39489-5
• Metal oxygen 신뢰도 1.0

  “The assignment of bands at 420 cm-1, 580 cm-1 and 650 cm-1 to the stretching vibrations of Zr-O bonds is more probable due to the progressive crystallization of different forms of zirconia in these samples, which agrees with the X-ray analy”

  Adamczyk - 2022 - The Study of the Influence of ZrO2 Precursor Type DOI: 10.3390/gels8110724
• Alkyl C-H 신뢰도 1.0

  “Figure 2: ATR-FTIR  375 Comparative study of carbonyl index methods for transmission and 1,420cm-1 C-H as the stretching modes between 1,500 and CI calculations used to compare against the SAUB method Table 3:”

  Almond 等 - 2020 - Determination of the carbonyl index of polyethylen DOI: 10.1515/epoly-2020-0041