What absorbs at 469 cm⁻¹ in an FTIR spectrum?
A band near 469 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 469 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 |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 4 | 4 | 1.0 |
| Siloxane (Si-O-Si) | 3 | 3 | 1.0 |
| Silicon (Si) | 3 | 3 | 1.0 |
| Phosphate (PO4) | 2 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| N 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 |
|---|---|---|---|
| hematite | 469, 1030, 938 | Silicon-oxygen (Si-O), Siloxane (Si-O-Si), Silicon (Si) | 1 |
| kaolinite | 469, 3696, 693 | Silicon-oxygen (Si-O), Silicon (Si), Siloxane (Si-O-Si) | 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 469 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
-
আত্মবিশ্বাস 1.0
“by cm-1 Si-O symmetrical stretching vibration to 801 value of wavenumber and Si-O cm-1 wavenumber.37 asymmetrical bending vibration to 469 value of At relative cm-1 high doses of radiation at 687 value of wavenumber, a new peak appears and”
Huseynov 等 - 2018 - Fourier transform infrared spectroscopic study of DOI: 10.1142/S0217979218500741 -
আত্মবিশ্বাস 1.0
“The peaks around 469 and 3098cm(cid:2)1 are attributed to the N LVM [13], and the As stretch mode of N-H [10], respectively.”
Nishimura 等 - 2007 - Electrical properties of GaAsN film grown by chemi DOI: 10.1016/j.physb.2007.08.183 -
Alkene (C=C) আত্মবিশ্বাস 1.0
“LLM confirmed rule peak-group candidate”
Patoka 等 - 2016 - Nanoscale plasmonic phenomena in CVD-grown MoS2 mo DOI: 10.1364/OE.24.001154 -
আত্মবিশ্বাস 1.0
“Peaks found at 446, 452, between 400 and 4,000 O-H 3,691 3,708 3,720 stretching vibrations 469cm-1 highfor three samples can be related to the high-frequency frequency Au mode of CuO;”
Saleem 等 - 2022 - Enhancement in structural, morphological, and opti DOI: 10.1515/ntrev-2022-0473 -
Silicon (Si) আত্মবিশ্বাস 1.0
“cm-1 cm-1 and 469 were attributed to the antisymmetric stretching vibration, symmetric stretching 469 were attributed to the antisymmetric stretching vibration, symmetric stretching vibration cm-1 cm-1 and 469 were attributed to the antisym”
Ding 等 - 2018 - The Preparation of Nano-SiO2Dialdehyde Cellulose DOI: 10.3390/polym10050550 -
Phosphate (PO4) আত্মবিশ্বাস 1.0
“A low cm-1 cm-1 and the double bands at 564 and 604 belong to bending vibrations of P-O (υ intensity band at 469”
Esfahani 等 - 2016 - Structural and morphological analysis of zinc inco DOI: 10.1590/S1517-707620160003.0055 -
আত্মবিশ্বাস 1.0
“(Si-O-Al stretching vibration), 938 and 912 (Al-OH deformation vibration), 693 (Si-O-Si stretching vibration), 1008 cm-1 (Si-O-Al stretching vibration), 938 and 912 cm-1 (Al-OH deformation cm-1 cm-1 symmetrical bending vibration), 538 (Si-O”
Ma 等 - 2019 - Investigation of the Optical, Physical, and Chemic DOI: 10.3390/su11143803 -
Silicon (Si) আত্মবিশ্বাস 1.0
“The characterisitc band at 469 is attributed to the TO (T Si or Al) tetra4 structure35.”
Zeolite RHO Synthesis Accelerated by Ultrasonic Irradiation Treatment DOI: 10.1038/s41598-019-51460-x
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।