What absorbs at 545 cm⁻¹ in an FTIR spectrum?
A band near 545 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
A band near 545 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.
সম্ভাব্য কার্যকরী-গ্রুপ অ্যাসাইনমেন্ট
| কার্যকরী গ্রুপ | সমর্থনকারী তথ্য | উদ্ধৃত সূত্র | সর্বোচ্চ আত্মবিশ্বাস |
|---|---|---|---|
| Metal oxygen | 5 | 5 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| C c single bond | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
র্যাঙ্কিং জমা হওয়া সাহিত্য প্রমাণ প্রতিফলিত করে, একটি একক কর্তৃত্বপূর্ণ নিয়ম নয়। সর্বদা আপনার নমুনা প্রসঙ্গের বিরুদ্ধে নিশ্চিত করুন।
Possible materials
| উপাদান | সমর্থনকারী শিখর | Overlapping groups | উদ্ধৃত সূত্র |
|---|---|---|---|
| ZnO | 545, 1400, 3430 | Metal oxygen, Methacrylate, Methoxy (OCH3) | 1 |
| gelatin | 545, 1652, 3300 | Methacrylate | 1 |
| ZnO NPs | 545, 1664, 875 | Metal oxygen, Methacrylate | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
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 545 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
এই অ্যাসাইনমেন্টগুলোর পেছনে সাহিত্য
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আত্মবিশ্বাস 1.0
“Phase formation has been elucidated from Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analysis of the cm-1in band at 545 the FTIR spectra represents the presence of Fe-O bond which shifts to lower samples.”
Nikam 和 Athawale - 2013 - Effect of Base and Dopant Concentration on Phase F DOI: 10.1063/1.4810567 -
আত্মবিশ্বাস 1.0
“24 436 cm-1is broad peak near 545 attributed to Fe-O and Bi- (1970).”
Singh 等 - 2013 - Synthesis and Optical Properties of Y(3+)Doped BiF DOI: 10.1063/1.4810583 -
আত্মবিশ্বাস 1.0
“The peaks at 545 cm-1 in composites cm-1 cm-1 545 and 680 attributed to the Zn-O bond (Figure 5a) [35].”
Babayevska 等 - 2021 - Fabrication of Gelatin-ZnO Nanofibers for Antibact DOI: 10.3390/ma14010103 -
Alkyl C-H আত্মবিশ্বাস 1.0
“cm-1, cm-1, 780 and ance of some absorption peaks at 1,318 cm-1), and C-H matic ring skeleton vibration (around 1,545 cm-1, which are due to the symmetrical stretch514(515) cm-1) in their spectra;”
Ch'ng 等 - 2016 - Vasorelaxation Study and Tri-Step Infrared Spectro DOI: 10.3831/KPI.2016.19.016 -
Metal oxygen আত্মবিশ্বাস 1.0
“cm(cid:4)1 /Mo4+).38Thehigh-temperaturereductionpeakwasduetothe species.41 molybdate The bands at 727 could be attributed 4phase.42Thevibrationbandat545cm(cid:4)1results 2e(cid:4) / Mo4+ (Mo4+ Mo0).38 tothea-NiMoO complete reduction of spec”
Synthesis of ZSM-5/KIT-6 with a tunable pore structure and its catalytic application in the hydrodesulfurization of dibenzothiophene and diesel oil DOI: 10.1039/c8ra05675g -
C c single bond আত্মবিশ্বাস 1.0
“cm(cid:1)1 cm(cid:1)1 mM(Pt)).ApoptoticcellswereanalyzedusingtheMuse™Count, identied (d) The bands at 545 and 276 were as Muse™ Muse™ C-C-O Viability kit, Caspase 3/7 kit and the Annexin V bending vibrations and skeletal deformation modes”
Gonzalez Torres 等 - 2018 - Synthesis of gamma radiation-induced PEGylated cis DOI: 10.1039/c8ra06296j -
Phosphate (PO4) আত্মবিশ্বাস 1.0
“cm-1 cm-1 δO-P-O Bands A at ~545 and B at ~566 correspond to the deformation vibration of and cm-1 Q2 δO-P-O bonds in units [63].”
Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals DOI: 10.3390/ma12203429 -
আত্মবিশ্বাস 1.0
“New peak assignable to Ni-N.”
Nasaruddin 等 - 2022 - Synthesis, Structural Characterization, Hirshfeld DOI: 10.1021/acsomega.2c04688
এই ব্যান্ডের সাথে একটি স্পেকট্রাম আছে?
আপনার FTIR স্পেকট্রাম আপলোড করুন এবং সেকেন্ডের মধ্যে একটি সম্পূর্ণ ব্যাখ্যা রিপোর্ট পান — সাহিত্য সাইটেশন সহ পিক অ্যাসাইনমেন্ট, লাইব্রেরি ম্যাচ এবং একটি আত্মবিশ্বাস-রেটেড এভিডেন্স চেইন।