What absorbs at 1439 cm⁻¹ in an FTIR spectrum?
A band near 1439 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
Mga posibleng pagtatalaga ng functional-group
| Functional group | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| Carboxyl (COOH) | 2 | 2 | 0.9 |
| Aromatic ring | 1 | 1 | 0.8 |
| Carbonyl (C=O) | 1 | 1 | 0.7 |
| Ammonium | 1 | 0 | 0.9 |
Ang pagraranggo ay sumasalamin sa naipon na ebidensya ng literatura, hindi isang solong awtoritatibong tuntunin. Palaging kumpirmahin laban sa konteksto ng iyong sample.
Literatura sa likod ng mga pagtatalagang ito
-
Carboxyl (COOH) kumpiyansa 0.9
“COO- band at 1381 cm-1 or 1439 cm-1”
Eisenhauer 等 - 2012 - In Channelrhodopsin-2 Glu-90 Is Crucial for Ion Se DOI: 10.1002/anie.201107509 -
kumpiyansa 0.9
“Text attributes peak at 1438.90 to bending vibration of O-Ca-O group.”
Mardiana 等 - 2017 - Ultrasound-Assisted Synthesis of Curcumin Analogs DOI: 10.1063/1.4991200 -
Carboxyl (COOH) kumpiyansa 0.9
“assigned to O-H stretching of -COOH in rGO”
Morsy 等 - 2022 - Preparation, investigation, and temperature sensin DOI: 10.1007/s10854-022-09247-w -
Aromatic ring kumpiyansa 0.8
“Phenyl ring related PPA absorption.”
Tassi 等 - 2017 - A detailed investigation of the microwave assisted DOI: 10.1016/j.apt.2016.09.020 -
Carbonyl (C=O) kumpiyansa 0.7
“C=O bond in carboxylic acid group”
Chen 等 - 2020 - Inhibition of Poly(ethylenediaminetetraacetic acid DOI: 10.3390/cryst10060544
May spectrum ka ba na may ganitong band?
I-upload ang iyong FTIR spectrum at makakuha ng buong interpretasyon na ulat — mga pagtatalaga ng peak na may mga pagsipi ng literatura, pagtutugma ng library, at isang kadena ng ebidensya na may rating ng kumpiyansa — sa loob ng ilang segundo.
I-interpret ang aking spectrum