What absorbs at 2866 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 2866 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 2866 cm⁻¹ is usually not enough for material identification by itself.

실제 사용

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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

• Alkyl C-H 신뢰도 1.0

  “cm-1 peaks at 2865.67 and 2918.4 corresponding to stretching vibration of C H bonds in the high frequency area together cm-1 with a sharp peak at 1465.95 corresponding to the bending vibration of C H groups of water molecules adsorbed cm-1”

  Production of graphene powder by electrochemical exfoliation of graphite electrodes immersed in aqueous solution DOI: 10.1016/j.ijleo.2016.04.101
• 신뢰도 1.0

  “Explicit assignment in text”

  Lu 和 Mi - 2005 - Characterization of the interfacial interaction be DOI: 10.1021/ma0486896
• Alkyl C-H 신뢰도 1.0

  “In addition, the presence of the C-H stretching at 2931 cm-1 and 2866 cm-1, C=O urethane linkage [33].”

  Self-Healable Supramolecular Vanadium Pentoxide Reinforced Polydimethylsiloxane-Graft- Polyurethane Composites DOI: 10.3390/polym11010041
• Acetate 신뢰도 1.0

  “cm-1 cm-1, C=O (symmetric), stretching at 1721 at 2866 cm-1, C-O-C stretching C-C and C-O stretching at 1721”

  Preparation of electrospun polycaprolactone nanofiber mats loaded with microalgal extracts DOI: 10.1002/elsc.201900009
• Alkyl C-H 신뢰도 1.0

  “cm-1 C-H asymmetric stretching), 2929 (methylene C-H peak near 122.1 (cid:3)C does not vary with the mass ratio of cm-1 asymmetric stretching), 2866 (methyl and methylene LOV and indicates the temperature of the eutectic reaction: cm-1 C-H”

  Gorniak 等 - 2016 - Thermal, spectroscopic and dissolution studies of DOI: 10.1007/s10973-016-5279-z
• Alkyl C-H 신뢰도 1.0

  “cm-1 cm-1 cm-1 bands at 2945 (asym CH stretch), 2866 (sym CH stretch), 1730 (ester C = O 2 2 cm-1 stretch), and 1060-1150 (asym C-O-C stretch) [36].”

  Adapalene-loaded poly(#_#x03B5;-caprolactone) microparticles: Physicochemical characterization and in vitro penetration by photoacoustic spectroscopy DOI: 10.1371/journal.
• Alkyl C-H 신뢰도 1.0

  “region arising from C-H stretching of aromatic 2866 and cm-1 compound.”

  Antibacterial Potential of Bacterial Cellulose Impregnated with Green Synthesized Silver Nanoparticle Against S. aureus and P. aeruginosa DOI: 10.1007/s00284-023-03182-7
• Alkyl C-H 신뢰도 1.0

  “The positive band at cm-1 cm-1 2993-2995 and the negative band at 2866 (C-H stretching region) demonstrated the difference between normal colon tissues and polyps in the contributions of various”

  Ex Vivo Vibration Spectroscopic Analysis of Colorectal Polyps for the Early Diagnosis of Colorectal Carcinoma DOI: 10.3390/diagnostics11112048