Metal oxo — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Metal oxo tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
Metal oxo is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.
Characteristic FTIR peaks for Metal oxo
| Wavenumber (cm⁻¹) | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| 1020 | 3 | 1 | 1.0 |
| 400 | 2 | 2 | 1.0 |
| 478 | 2 | 2 | 0.8 |
| 783 | 1 | 1 | 1.0 |
| 1123 | 1 | 1 | 1.0 |
| 830 | 1 | 1 | 1.0 |
| 535 | 1 | 1 | 1.0 |
| 450 | 1 | 1 | 1.0 |
| 873 | 1 | 1 | 1.0 |
| 516 | 1 | 1 | 1.0 |
| 898 | 1 | 1 | 1.0 |
| 520 | 1 | 1 | 1.0 |
| 446 | 1 | 1 | 1.0 |
| 1007 | 1 | 1 | 1.0 |
| 996 | 1 | 1 | 1.0 |
| 485 | 1 | 1 | 1.0 |
| 956 | 1 | 1 | 1.0 |
| 1003 | 1 | 1 | 1.0 |
| 740 | 1 | 1 | 0.9 |
| 793 | 1 | 1 | 0.9 |
| 950 | 1 | 1 | 0.9 |
| 523 | 1 | 1 | 0.7 |
| 1010 | 1 | 0 | 1.0 |
| 840 | 1 | 0 | 1.0 |
| 825 | 1 | 0 | 1.0 |
| 993 | 1 | 0 | 0.8 |
Spectrum logic
A functional-group assignment becomes more confident when several expected bands appear together. Use this page to find the strongest-supported peaks, then confirm that the same sample exhibits a coherent pattern rather than a single isolated hit.
Real-world usage
These pages are useful for unknown material analysis, peak explanation in reports, polymer troubleshooting, and verifying whether a candidate material family is chemically plausible.
Common mistakes
- Using one functional-group page as a complete material verdict without checking the rest of the spectrum.
- Assuming the strongest band is always the most diagnostic one.
- Forgetting that processing, additives, aging, and mixtures can shift or broaden expected peaks.
Verification advice
Use DSC, GC-MS, or TGA when several material families share similar bands or when mixture effects make the FTIR assignment uncertain.
Literature behind these assignments
-
1003 cm⁻¹ confidence 1.0
“Explicitly stated: 'peaks at 1003 and 956 assigned respectively to V5+=O and V4+=O'”
Nagaraju - 2013 - Ultra Long Single Crystalline Na0.3V2O5 Nanofibers DOI: 10.5935/0103-5053.20130213 -
485 cm⁻¹ confidence 1.0
“The peak at 485 corresponds to the bending vibration of V-O-V [20].”
Saravanakumar 等 - 2018 - Role of NaOH concentration on synthesis and charac DOI: 10.1063/1.5047993 -
1007 cm⁻¹ confidence 1.0
“LLM confirmed rule peak-group candidate”
Optical and structural characterization of quadruplet and quintuplet molybdenum-containing phosphate glasses DOI: 10.1142/S0217984916502705 -
446 cm⁻¹ confidence 1.0
“Band assignment table for bands observed in FTIR spectra (cm-1) Band position Band assignments ~446 Bending vibrations of V-O-V bonds Bi-O bonds in distorted [BiO 6] octahedral units”
Synthesis, thermal and spectroscopic characterization of lithium bismuth borate glasses containing mixed transition metal ions DOI: 10.13036/17533562.57.3.018 -
898 cm⁻¹ confidence 1.0
“LLM confirmed rule peak-group candidate”
Determination of photoelectrochemical water oxidation intermediates on haematite electrode surfaces using operando infrared spectroscopy DOI: 10.1038/NCHEM.2557 -
516 cm⁻¹ confidence 1.0
“Figure 1(a) showed the first weight loss up to 516cm-1 320∘ [11], and the V-O-V V symmetric stretch around C with a large endotherm, associated with the volatiliza756cm-1 asymmetric stretch at [12].”
Gokdemir 等 - 2014 - Structural Modification of Sol-Gel Synthesized V2O DOI: 10.1155/2014/795384 -
873 cm⁻¹ confidence 1.0
“ance of a band at 873 indicates the formation of Specific adsorption of acetylene to basic sites is related to the V-O-V aggregated”
Guo 等 - 2012 - Structure and Basicity of Microporous Titanosilica DOI: 10.1021/jp305543m -
400 cm⁻¹ confidence 1.0
“Thus, absorption at 400°C has spectrum with main bands around 400 cm-1, O2V5+ O2Mo6+ bands (a.b.) at 1020, 840 and 628 which are and 375 nm corresponding to - and - attributed to V=O and V-O-V vibrations in V 2O [24], charge-transfers, resp”
Khalameida 等 - 2014 - Physical-chemical transformations in the system V2 DOI: 10.2478/s11532-013-0375-4
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