What absorbs at 1701 cm⁻¹ in an FTIR spectrum?
A band near 1701 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 5 cited sources
Možná přiřazení funkčních skupin
| Funkční skupina | Podpůrná fakta | Citované zdroje | Nejvyšší spolehlivost |
|---|---|---|---|
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
Pořadí odráží nahromaděné literární důkazy, nikoli jediné autoritativní pravidlo. Vždy potvrďte v kontextu vašeho vzorku.
Literatura za těmito přiřazeními
-
Carboxyl (COOH) spolehlivost 1,0
“In this speccm(cid:2)1 trum, the acid band is shifted slightly to 1701 but is [1] G.”
Topacli 等 - 2006 - Infrared studies of pyroelectric Langmuir-Blodgett DOI: 10.1016/j.molstruc.2006.03.083 -
Carbonyl (C=O) spolehlivost 1,0
“LLM confirmed rule peak-group candidate”
Ranjha 等 - 2014 - Preparation and Characterization of Isosorbide Mon DOI: 10.4314/tjpr.v13i12.4 -
Alkyl C-H spolehlivost 1,0
“2934-2929 and 2860-2857 (asymmetric and displayed a band at 1739-1735 corresponding to the symmetric C-H stretching) and 1460-1457 (asymmetric nonbonded carbonate carbonyl groups, but did not show cm-1 C-H bending) of CH the band at 1701 2;”
Aliphatic polycarbonate-based thermoplastic polyurethane elastomers containing diphenyl sulfide units DOI: 10.1007/s10973-016-5420-z -
Carbonyl (C=O) spolehlivost 1,0
“Anhydride modification of lignin was also confirmed cm-1, intensified peak recorded around 1701 which corresponds to the carbonyl stretching of ester by an intensified peak recorded around 1701 cm-1, which corresponds to the carbonyl stretc”
Effect of Lignin Modification on Properties of Kenaf Core Fiber Reinforced Poly(Butylene Succinate) Biocomposites DOI: 10.3390/ma12244043 -
Carboxyl (COOH) spolehlivost 1,0
“The weak peak at 1649 represents cm1 the stretching vibration of highly conjugated C = O, and the peak at 1701 corresponds to the characteristic stretching vibration of COOH carboxylic acid.”
Wang 等 - 2023 - Study on the thermal kinetics and microscopic char DOI: 10.21203/rs.3.rs-2868841/v1
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