What absorbs at 1985 cm⁻¹ in an FTIR spectrum?
A band near 1985 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 1 cited source
Possible functional-group assignments
| Functional group | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| Methoxy (OCH3) | 1 | 1 | 1.0 |
| Methacrylate | 1 | 1 | 1.0 |
| C-O single bond | 1 | 1 | 1.0 |
| Acetate | 1 | 1 | 1.0 |
| Water (H2O) | 1 | 0 | 1.0 |
| Hydroxyl (O-H) | 1 | 0 | 1.0 |
Ranking reflects accumulated literature evidence, not a single authoritative rule. Always confirm against your sample context.
Literature behind these assignments
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Acetate confidence 1.0
“h characterized band at 1985 ranges from 4.4 to 4.8 If the vibrational dephasing o time of the C-O oscillator is assumed to be the same as that measured for CO bound to r M cm-1 myoglobin at room temperature [41], this is very close to the”
Liu 等 - 2012 - Structural changes that occur upon photolysis of t DOI: 10.1016/j.bbabio.2011.12.010.
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