What absorbs at 835 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 835 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.

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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 835 cm⁻¹ is usually not enough for material identification by itself.

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검증 조언

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이 할당의 배경이 되는 문헌

• 신뢰도 1.0

  “Explicit assignment: IR absorption band at 835 cm-1 reported as result of π-π* interaction”

  Influence of Single-Walled Carbon Nanotubes Enriched in Semiconducting and Metallic Tubes on the Electropolymerization of Tetrabromo Ortho-Xylene: Insights on the Synthesis Mechanism of Poly(ortho-phenylenevinylene) DOI: 10.1016/j.eurpolymj.2017.01.015
• Alkene (C=C) 신뢰도 1.0

  “The C=C band of the cm-1 isoprene is shown at 835 [6,7] as a shoulder peak to the epoxide.”

  Dahham 等 - 2018 - The Influences of Zirconium Dioxide on ENR-25ZrO2 DOI: 10.1088/1742-6596/1019/1/012055
• Alkyl C-H 신뢰도 1.0

  “cm-1 bending vibrations of C-H are present at 835 and 860 in Raman spectra.”

  Dalal 等 - 2015 - Structural, electrical, ferroelectric and mechanic DOI: 10.1039/C5RA10501C.
• C-O single bond 신뢰도 1.0

  “In addition, one of the cm-1that 3,200 represents the presence of N-H group chitin compound indication is the occurrence of tug cm-1reflecting on amide and the presence of peak at the wavelength vibration at the wavelength of 834.54 cm-1 of”

  Naiu 等 - 2020 - The Effect of HCl-Thermal Pressure Hydrolysis and DOI: 10.12944/CRNFSJ.8.1.18
• Acetate 신뢰도 1.0

  “cm(cid:3)1 (CH rockteristics of vibration peaks at 835 and 930 electrodes.22 2 It is also noticed that the semicircular portion cm(cid:3)1 cm(cid:3)1 (C-O-C stretching), 1220 and 1250 ing), 1116 is reduced and almost disappeared for plastic”

  Influence of high and low dielectric constant plasticizers on the ion transport properties of PEO: NH4HF2 polymer electrolytes DOI: 10.1177/0954008319894043
• C c single bond 신뢰도 1.0

  “While the bond C-C rocking noted for PVA 0.1g/ CMC 0.4g 835.00cm-1 only and IR peak corresponds to CMC polymer that acts 1, 4-β Glycoside of cellulose seemed only in (PVA 0.2g /CMC 0.3 g) and (PVA0.25 g / CMC0.25 g) and disappeared in the r”

  Abead 等 - 2023 - Study physical characteristics of Polyvinyl Alcoho DOI: 10.15764/pche.2014.02001.
• Alkyl C-H 신뢰도 1.0

  “Peaks at 875 cm-1 and 835 cm-1 are attributed to C-H expansion outside the benzene ring, due to the hydroxymethyl synthesis reaction of formaldehyde and phenol.”

  Chen 等 - 2020 - Properties of Wood Ceramics Prepared from Thermo-M DOI: 10.3390/f11111204
• Phosphate (PO4) 신뢰도 1.0

  “Band Position (cm-1) No Band Assignments 1 780 Sugar phosphate vibration 2 835 Deoxyribose phosphate Adenine3 938 Thymine base pairs CCC and O of deoxyribose skeletal 4 963 motion PC5 1014 O or O stretching C6 1050 O deoxyribose stretching”

  Chemical and Physical Characteristics of Doxorubicin Hydrochloride Drug-Doped Salmon DNA Thin Films DOI: 10.1038/srep12722