What absorbs at 3329 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 3329 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 3329 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

• N h 신뢰도 1.0

  “cm-1 The vibrational bands at 3329 and 3193 corresponded to the stretching symmetThe vibrational bands at 3329 and 3193 cm-1 corresponded to the stretching symric vibration of NH and the bending symmetric vibration of NH for DES1, indicatin”

  Can 等 - 2023 - Choline Chloride-Based Deep Eutectic Solvent-Treat DOI: 10.3390/f14030569
• Hydroxyl (O-H) 신뢰도 1.0

  “Fourier Transform EFB WPG cm-1 Infrared spectrum shows that after the modification, the intensity of -OH peak at 3329 decreased and (FTIR) cm-1 the new peak at 1728 of C=O ester emerged.”

  Jahi 等 - 2020 - Empty Fruit Bunch Cellulose based Sorbent for Oil DOI: 10.17576/jsm-2020-4909-29
• Alkyl C-H 신뢰도 1.0

  “These values suggest how much stretching at 3329 C-H alkane stretching at”

  Al-Ghouti 和 Dib - 2020 - Utilization of nano-olive stones in environmental DOI: 10.1007/s40201-019-00438-y
• 신뢰도 1.0

  “e PNX) for PN observed at 3329 represents the stretching vibration of the N-H bond, and the peak at about”

  Lu 等 - 2016 - Use of polyurea from urea for coating of urea gran DOI: 10.1186/s40064-016-2120-x
• 신뢰도 1.0

  “It can be seen from Figure 5 that the N-H stretching produces symmetrical (3329 cm-1), asymmetrical (3251 and 3153 cm-1) stretching vibration peaks, and the vibration modes”

  Facile Synthesis, Characterization, Anti-Microbial and Anti-Oxidant Properties of Alkylamine Functionalized Dumb-Bell Shaped Copper-Silver Nanostructures DOI: 10.3390/cryst10110966
• Hydroxyl (O-H) 신뢰도 1.0

  “As observed in Figure 3A, a broad cm-1 peak at 3329 might correspond to the hydroxyl groups (-OH) in polyphenols in bush tea, such as flavonoids and phenolic acids or -NH stretch of amino groups [9].”

  Biosynthesis of Silver Nanoparticles from Fermented Bush Tea (Athrixia phylicoides DC) Leaf Extract and Evaluation of Their Antioxidant and Antimicrobial Properties DOI: 10.3390/fermentation9070648
• Hydroxyl (O-H) 신뢰도 1.0

  “FTIR spectra of new cellulose paper show absorbance cm-1 peaks located close to 3329 that represents an O-H functional group, located close to 2922 and cm-1 cm-1 2854 that represent a C-H functional group, and located close to 1050 that rep”

  Fourier Transform Infrared (FTIR) Spectroscopy Analysis of Transformer Paper in Mineral Oil-Paper Composite Insulation under Accelerated Thermal Aging DOI: 10.3390/en11020364
• Hydroxyl (O-H) 신뢰도 1.0

  “LLM confirmed rule peak-group candidate”

  Pomelo Peel Modified with Citrate as a Sustainable Adsorbent for Removal of Methylene Blue from Aqueous Solution DOI: 10.3390/molecules23061342