What absorbs at 1206 cm⁻¹ in an FTIR spectrum?

Schnelle Antwort

A band near 1206 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.

Mögliche Funktionsgruppenzuweisungen

Das Ranking spiegelt die gesammelte Literatur Evidenz wider, nicht eine einzelne maßgebliche Regel. Bestätigen Sie immer anhand Ihres Probenkontexts.

Mögliche Materialien

Materialien werden nur angezeigt, wenn derselbe Literaturpool diese Bande und mindestens einen weiteren charakteristischen Peak unterstützt.

Spektrumslogik

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 1206 cm⁻¹ is usually not enough for material identification by itself.

Praktische Anwendung

Diese Art von Abfrage ist üblich bei der Polymeridentifikation, dem Screening unbekannter Kunststoffe, der Fehlersuche in der Qualitätskontrolle, der Verifizierung von Recyclingmaterial und der literaturgestützten Überprüfung der Peakzuordnung.

Häufige Fehler

• Behandlung einer isolierten Bande als Beweis für ein Material, ohne mindestens einen oder zwei unterstützende Peaks zu überprüfen.
• Überlappung ignorieren: Mehrere funktionelle Gruppen können nahe der gleichen Wellenzahl beitragen.
• Überspringen der Validierung, wenn Additive, Mischungen, Oxidation oder Verunreinigungen das Spektrum verfälschen können.

Beratung zur Verifizierung

Wenn weiterhin Mehrdeutigkeit besteht, validieren Sie die Hypothese mit DSC, GC-MS oder TGA, insbesondere bei Mischungen, degradierten Proben und gefüllten Polymeren.

Literatur hinter diesen Zuweisungen

• Vertrauen 1,0

  “easily distinguish the present peak from the 1206-cm(cid:3)1 1230cm(cid:3)1 The important result here is that the broad absorption band at peak was not due to oxygen”

  Second Harmonic Vibrational Mode of Substitutional Carbon in Cast-Grown Multicrystalline Silicon DOI: 10.1143/APEX.4.051401
• Acetate Vertrauen 1,0

  “All the solutions used in NMR C-O stretching 1205.99 1214.82 1396.97 ]C-H experiment were prepared in D 2O solvent.”

  Multi-spectroscopic monitoring of molecular interactions between an amino acid-functionalized ionic liquid and potential anti-Alzheimer's drugs DOI: 10.1039/d0ra06323a
• Carbohydrate Vertrauen 1,0

  “In turn, in the spectrum of liver, a three 1280cm(cid:3)1, exhibits a specific triplet of bands at 1206, 1238, and bands characteristic for glycogen are observed at 1029, 1078 and however, we do not observe them in the spectra of the homoge”

  Rapid approach to analyze biochemical variation in rat organs by ATR FTIR spectroscopy DOI: 10.1016/j.saa.2013.09.131
• Aromatic ring Vertrauen 1,0

  “The spectra for amlodipine besylate drug (Figure 4b) show peaks at 2964.69 for C-CH stretching, at 1698.53, 3 cm(cid:1)1 cm(cid:1)1 cm(cid:1)1 1676.11 for ester C=O stretching, at 1493.92 for aromatic skeletal stretching, at 1205.55 for Sul”

  Formulation, optimization, and characterization of amlodipine besylate loaded polymeric nanoparticles DOI: 10.1177/09673911211056154
• Phosphate (PO4) Vertrauen 1,0

  “1250 Amide III (β-sheet, protein) 1235 Antisymmetric phosphate stretching 1206 C-C stretch, C-H bend”

  Growth substrate induced functional changes elucidated by FTIR and Raman spectroscopy in in-vitro cultured human keratinocytes. DOI: 10.1007/s00216-006-0876-5
• Phosphate (PO4) Vertrauen 1,0

  “∼430 prominent at and 973 cm-1 for symmetric P-O stretching (ν1), cm-1 for doubly ∼1192 Materials2022,15,2924 7of16 degenerate O-P-O bending (ν2), and 1206 cm-1 for triply degenerate asymmetric P- ∼555 ∼610 O stretching (ν3), and and cm-1 f”

  Ponnusamy 等 - 2022 - Synthesis, Structural, and Mechanical Behavior of DOI: 10.3390/ma15082924
• Vertrauen 0,9

  “Text: 'bands at 1735 and 1206 were characteristic of C=O and C-O stretching groups'.”

  Bio-plastic (P-3HB-co-3HV) from Bacillus circulans (MTCC 8167) and its biodegradation DOI: 10.1016/j.colsurfb.2011.11.011
• Aromatic ring Vertrauen 0,9

  “Explicit assignment in text.”

  Synthesis, Characterization, and Antibacterial Potential of Poly(o-anisidine)/BaSO4 Nanocomposites with Enhanced Electrical Conductivity DOI: 10.3390/pr10091878