What absorbs at 1138 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 1138 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 1138 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

• Acetate 신뢰도 1.0

  “cm-1 strong band at 792 Bands at 1138 and 610 are assigned to C-O and 2 3 m Ti-O, respectively.”

  Errington 等 - 2010 - Synthesis and Structure of the Alkoxido-Titanium P DOI: 10.1007/s10876-010-0329-3
• Amide 신뢰도 1.0

  “*** II/COO(cid:3) Amide stretching 1188.83±0.08 1195.40±0.05 0.466±0.025 0.324±0.011 *** *** II/COO(cid:3) Amide stretching 1137.97±0.14 1141.26±0.12 0.649±0.012 0.275±0.010 II/COO(cid:3) Amide stretching 1065.34±0.23 1.084±0.012”

  Differentiation in MALDI-TOF MS and FTIR spectra between two pathovars of Xanthomonas oryzae DOI: 10.1016/j.saa.2014.06.056
• Acetate 신뢰도 1.0

  “The ratio A/B also increases for all the 1297 associated with chain vibrations, and the cm-1 cm-1 films, treated as there exist more non-hydrogen-bonded bands at 1138 and 832 assigned to the asymunmodified C-O-C carbonyls, in comparison to”

  Effect of PEG grafting density on surface properties of polyurethane substrata and the viability of osteoblast and fibroblast cells DOI: 10.1007/s10856-022-06668-1
• Phosphate (PO4) 신뢰도 1.0

  “12, the bands at 1138 and 1059 are P-O-C assigned to the stretching vibration of and PO 2/PO 3”

  Functional group effect on flame retardancy, thermal, and mechanical properties of organophosphorus-based magnesium oxysulfate whiskers as a flame retardant in polypropylene DOI: 10.1039/c7ra02863f
• 신뢰도 1.0

  “Moreover, the bands at 1009, 1122, and at 1138cm-1 region [21, 22], absorption peaks related to Er doping in were ascribed to stretching of Ti-O-C [17].”

  Gokdemir 等 - 2014 - Structural Modification of Sol-Gel Synthesized V2O DOI: 10.1155/2014/795384
• Hydroxyl (O-H) 신뢰도 1.0

  “cm-1), cm-1), biomarkers were (~980 Oligosaccharide C-OH stretching band (~1138 IntegrativeBiologyAcceptedManuscript cm-1), cm-1), Deoxyribose (~1188 Amide III (~1242 In-plane CH bending vibration from the”

  Jin 等 - 2017 - Fingerprinting microbiomes towards screening for m DOI: 10.1039/C7IB00009J.
• Thiol 신뢰도 1.0

  “in the intensity of this band correlates with one of 1138 Thus, it is obviously that this band is associated with n(SH) coordinated H 2S.”

  Martirosyan 等 - 2021 - Low Temperature Spectroscopic Study of the Sulfide DOI: 10.6060/mhc214035m
• 신뢰도 0.5

  “From table 1, incomplete assignment”

  Antioxidant and antidiabetic properties of biocompatible ceria oxide (CeO2) nanoparticles in mouse fibroblast NIH3T3 and insulin resistant HepG2 cells DOI: 10.1016/j.ceramint.2020.11.230