What absorbs at 3053 cm⁻¹ in an FTIR spectrum?

Snel antwoord

A band near 3053 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.

Mogelijke functionele-groeptoewijzingen

Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.

Mogelijke materialen

Materialen worden alleen getoond wanneer dezelfde literatuurpool deze band en ten minste één extra karakteristieke piek ondersteunt.

Spectrumlogica

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 3053 cm⁻¹ is usually not enough for material identification by itself.

Gebruik in de praktijk

Dit type query komt vaak voor bij polymeeridentificatie, screening van onbekende kunststoffen, probleemoplossing bij QC, verificatie van gerecycled materiaal en literatuurondersteunde beoordeling van piektoewijzing.

Veelgemaakte fouten

• Het behandelen van een enkele geïsoleerde band als bewijs van een materiaal zonder ten minste een of twee ondersteunende pieken te controleren.
• Overlap negeren: meerdere functionele groepen kunnen bijdragen rond hetzelfde golfgetal.
• Validatie overslaan wanneer additieven, mengsels, oxidatie of verontreiniging het spectrum kunnen verstoren.

Advies voor verificatie

Wanneer dubbelzinnigheid blijft bestaan, valideer de hypothese met DSC, GC-MS of TGA, vooral voor mengsels, gedegradeerde monsters en gevulde polymeren.

Literatuur achter deze toewijzingen

• N h vertrouwen 1,0

  “Absence of ν(NH) band at 3053 cm-1 due to loss of hydrogen”

  Ni-thiosaccharinate complexes: synthesis, characterization and DFT studies. Biological properties as superoxide dismutase mimetics and as anti-carcinogenic agents DOI: 10.1016/j.ica.2019.04.040
• Acetate vertrouwen 1,0

  “Ebastine at 1269 (C-N stretch), 1450 shown in Table 1 ranging from +18.9 mV to + cm-1 (C=C stretch), 1678 (C=O stretch) and 3053 32.6 mV and the PDI values of the prepared cm-1 (C-H stretch) were present in ebastine formulations were found”

  Khom 等 - 2014 - Development of Mucoadhesive Nanoparticulate System DOI: 10.4314/tjpr.v13i7.2
• Alkyl C-H vertrouwen 1,0

  “Although mostly overlapped by the O-H band, the stretching vibration of the C-H bond from the methylene group, as well as from the aromatic rings can still be observed at 2939, 2868 and 3053 cm-1, respectively.”

  Stability and Compatibility Studies of Levothyroxine Sodium in Solid Binary Systems—Instrumental Screening DOI: 10.3390/pharmaceutics12010058
• Acetate vertrouwen 1,0

  “Additionally, IV and C=O bending in proteins (Schmitt bands were present for 3053 (amide B cm-1 a higher intensity of the band correspondand Fleming., 1998).”

  Merma 等 - 2017 - DOI: 10.1590/0370-446720167000063
• vertrouwen 1,0

  “Amide A: peptide, protein N-H stretching 3053 Amide B: peptide, protein N-H stretching 2948”

  Metabolic Profile Characterization of Different Thyroid Nodules Using FTIR Spectroscopy: A Review DOI: 10.3390/metabo12010053
• Alkyl C-H vertrouwen 1,0

  “For acridine (spectrum a), the bands at 3052.6, cm-1 C-H 1400, 731.5 correspond to aromatic stretching vibra-”

  Structural diversity of cocrystals formed from acridine and two isomers of hydroxybenzaldehyde: 3-hydroxybenzaldehyde and 4-hydroxybenzaldehyde DOI: 10.1039/d3ra02300a
• Alkyl C-H vertrouwen 1,0

  “LLM confirmed rule peak-group candidate”

  Spepi 等 - 2016 - Experimental and DFT Characterization of Halloysit DOI: 10.1517/17425247.2016.1169271.