What absorbs at 1190 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 1190 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 1190 cm⁻¹ is usually not enough for material identification by itself.

실제 사용

이러한 유형의 질의는 고분자 식별, 미지 플라스틱 스크리닝, QC 문제 해결, 재활용 재료 검증 및 문헌 기반 피크 할당 검토에서 일반적입니다.

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

• Phosphate (PO4) 신뢰도 1.0

  “On the other hand, the stretchH 1190cm(cid:3)1 ing modes of P-O bonds are located above at low pH, The energies associated with the first step, i.e., the one that 1160cm(cid:3)1 OH(cid:3), and above implies the releasing of one or two at hi”

  Quantum chemical study on surface complex structures of phosphate on gibbsite DOI: 10.1016/j.saa.2015.03.013
• Phosphate (PO4) 신뢰도 1.0

  “The formation of covalent 1270cm-1, spectra: (PO 2) band near (PO 2) band at P-O-Cu linkages is easier in the polyphosphate glasses as s 1190cm-1, P-O1100cm-1, absorption band near about than in the metaphosphate glasses.”

  Shih 等 - 2003 - P-31 MAS-NMR and FTIR analyses on the structure of DOI: 10.1016/S0254-0584(03)00098-1
• Aromatic ring 신뢰도 1.0

  “combination band at 1190 that includes the bending of benzene ring (C-C-H), asymmetrical stretching of thiophene ring a(C-C-C and C-C-S), symmetrical cm-1, stretching of benzene ring s(C-C-C);”

  Aguilar-Rodriguez 等 - 2023 - Microanalytical Characterization of an Innovative DOI: 10.3390/molecules28020564
• Ring structure 신뢰도 1.0

  “The band at 1650 cm-1 has been assigned to the carbonyl stretching vibration, a number of skeletal ring vibrations at 1598, 1490 and 1413 cm-1, the asymmetric stretching of ether group at 1277 and 1190 cm-1, the aromatic hydrogen in-plane d”

  Mechano-Chemical Properties of Electron Beam Irradiated Polyetheretherketone DOI: 10.3390/polym14153067
• Sulfonate 신뢰도 1.0

  “the peaks at 1190 cm-1 cm-1 and 985 can be assigned to the asymmetric and symmetric stretching of SO 3.”

  Anis 等 - 2023 - Studies on Polybenzimidazole and Methanesulfonate DOI: 10.3390/polym15132821
• 신뢰도 1.0

  “cm-1, to 1550 or even 1570 the pyrrole ring C-N stretching band formed a maximum cm-1, cm-1, at 1475 C-H or C-N in the in-plane deformation band shifted to 1320 the cm-1, N-H+ pyrrole ring breathing band shifted to 1190 the deformation shif”

  Polypyrrole Aerogels: Efficient Adsorbents of Cr(VI) Ions from Aqueous Solutions DOI: 10.3390/gels9070582
• Aromatic ring 신뢰도 1.0

  “A peak appears at about 1190 showing that the aromatic structure of lignin has”

  Castro 等 - 2020 - Pretreatment Affects Activated Carbon from Piassav DOI: 10.3390/polym12071483
• 신뢰도 1.0

  “cm-1, C=O (symmetric), stretching at 1721 at 2866 cm-1, C-O-C stretching C-C and C-O stretching at 1721 cm-1, cm-1 and O-C-O stretching at 1190 [4,23].”

  Preparation of electrospun polycaprolactone nanofiber mats loaded with microalgal extracts DOI: 10.1002/elsc.201900009