What absorbs at 1142 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 1142 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 1142 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

  “42 43 cm-1 In the spectrum of PMMA, there is a distinct absorption band at 1142 which is due to O-CH 3 44”

  Ataei 等 - 2020 - Electrosprayed PMMA microcapsules containing green DOI: 10.1088/1361-665X/ab9754
• Amide 신뢰도 1.0

  “II), and 1328 (amide III) The absorption peaks at 1142 (antisymmetric elongation of II), and 1328 (amide III) cm-1.”

  Chitosan/PVA Based Membranes Processed by Gamma Radiation as Scaffolding Materials for Skin Regeneration DOI: 10.3390/membranes11080561
• 신뢰도 1.0

  “Explicit assignment: 'C-N stretching vibrations are shown at 1286 and 1142 cm-1'.”

  Liao LePing 等 - 2011 - Preparation and characterization of microcapsule c DOI: 10.1007/s11434-010-4133-0
• S eq o 신뢰도 1.0

  “The consensus is that 1240 and 1142 cm-1 bands arise from νS=O vibrations in chelating cm-1 ν consensus is that 1240 and 1142 bands arise from vibrations in chelating (bridging) bidentate”

  Acidity-Reactivity Relationships in Catalytic Esterification over Ammonium Sulfate-Derived Sulfated Zirconia DOI: 10.3390/catal7070204
• 신뢰도 1.0

  “cm-1 cm-1 1591.8 (N-H bending), 1322.5 (R-SO sym2 (a) (c) caffeine physical mixtures at drug/coformer ratios: 1:1, 2:1, cm-1 metric stretching), 1142.1 (S-O stretching) and (e) 1:2, furosemide-caffeine co-crystals at drug/coformer ratios: c”

  Principal component and cluster analyses as supporting tools for co-crystals detection DOI: 10.1007/s10973-017-6436-8
• 신뢰도 1.0

  “The intensity of these bands disappear and bands at 880 and 1142 cm-1 show up which corresponds to Fe-S specific the bands is not very high, but their position is clear.”

  Synthesis and Characterization of Cu2FeSnS4–Cu2MnSnS4 Solid Solution Microspheres DOI: 10.3390/ma13194440
• Phosphate (PO4) 신뢰도 1.0

  “It PDBA improved the thermal stability of PET/PDBA and reduced the decomposition rate of cm-1 should be noted that a new absorbance peak of P-O-C appeared at 1142 cm-1 in material.”

  A High-Phosphorus-Content Polyphosphonate with Combined Phosphorus Structures for Flame Retardant PET DOI: 10.3390/polym15071713
• Hydrogen bond 신뢰도 1.0

  “Nonetheless, the band at 1142 sample gel fraction (GF) related to the formation of PVA crystallites (intraand intermolecular hydrogen bonding between the chains W”

  dos Santos 等 - 2020 - Layered cryogels laden with Brazilian honey intend DOI: 10.1590/0104-1428.06820