FTIR FUNCTIONAL GROUP

C-O single bond — FTIR absorption peaks and assignments

These are the characteristic FTIR wavenumbers where C-O single bond 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

C-O single bond 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 C-O single bond

Wavenumber (cm⁻¹) Supporting facts Cited sources Top confidence
1100 83 76 1.0
1030 75 65 1.0
1150 61 59 1.0
1160 56 55 1.0
1050 56 53 1.0
1080 52 49 1.0
1000 50 50 1.0
1200 49 48 1.0
1250 41 39 1.0
1240 41 38 1.0
1155 40 40 1.0
1035 39 35 1.0
1060 38 35 1.0
1032 34 33 1.0
1040 34 32 1.0
1020 33 31 1.0
1025 29 27 1.0
1230 29 27 1.0
1110 28 26 1.0
897 28 26 1.0
1157 27 26 1.0
1031 27 26 1.0
1400 26 26 1.0
1078 25 25 1.0
1026 25 24 1.0
1320 25 24 1.0
900 25 23 1.0
1120 25 22 1.0
1053 24 24 1.0
1159 24 23 1.0

Showing the 30 best-supported peaks of 1364 total for C-O single bond.

Possible materials

Material Supporting peaks Cited sources
biodiesel 858, 3470, 1457 1
Zinc Oxide Nanoparticles 1744, 1627, 1638 1
glycerol 1585, 1630, 2043 1

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

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