What absorbs at 1210 cm⁻¹ in an FTIR spectrum?
A band near 1210 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 6 cited sources
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Alkyl C-H | 3 | 2 | 1.0 |
| C c single bond | 2 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Alkene (C=C) | 1 | 1 | 1.0 |
| S s | 1 | 1 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
-
S s confidence 1.0
“In addition, the band f f cm-1 at 1183 in the S S and S S transitions, at shapes slightly changed, retaining an overall spectral 1 2 2 3 ∼1201 ∼1210 cm-1 and observed in all four transitions, feature;”
Suzuki 等 - 2008 - Monitoring water reactions during the S-state cycl DOI: 10.1021/bi801580e -
Alkyl C-H confidence 1.0
“This 3stretchingvibration,whilethepeakat1210cm(cid:3)1 2-CH withCH Theproductyieldwas90.3%andthewatercontentwasfoundto C-H Access is corresponded to bending vibration.”
Metal chloride anion based ionic liquids: synthesis, characterization and evaluation of performance in hydrogen sulfide oxidative absorption DOI: 10.1039/d2ra01494g -
Alkyl C-H confidence 1.0
“The absorption bands in the ranges 2800-3000 and 1210 cm-1 are connected with the valence and deformation CH oscillations, respectively.”
Chekhovskii 等 - 2008 - Kinetics of C(x)N(y) formation on electrode surfac DOI: 10.2298/SOS0802147C -
Alkene (C=C) confidence 1.0
“stretching 1483cm-1, 1210cm-1 spectrum of PANI has shown C=C stretching in the quinonoid ring at 1548 cm-1, C=N stretching vibration at C-N stretching vibrations of diverse benzenoid at and C-H bending”
Kukulski 等 - 2020 - A Polymeric Composite Material (rGOPANI) for Acid DOI: 10.3390/polym12051051 -
C-O single bond confidence 1.0
“LLM confirmed rule peak-group candidate”
Biochar Nanocomposite as an Inexpensive and Highly Efficient Carbonaceous Adsorbent for Hexavalent Chromium Removal DOI: 10.3390/ma15176055 -
C c single bond confidence 1.0
“LLM confirmed rule peak-group candidate”
XPS and FTIR Studies of Polytetrafluoroethylene Thin Films Obtained by Physical Methods DOI: 10.3390/polym11101629
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