What absorbs at 757 cm⁻¹ in an FTIR spectrum?
A band near 757 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
Mga posibleng pagtatalaga ng functional-group
| Grupong functional | Mga sumusuportang katotohanan | Mga nasiping sanggunian | Pinakamataas na kumpiyansa |
|---|---|---|---|
| Carboxyl (COOH) | 2 | 2 | 1.0 |
| C-S single bond | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
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
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Hydroxyl (O-H) kumpiyansa 1.0
“4 sites (B-type) or hydroxide sites (A-type) of apatite, the band positions are assigned differently for the A-type (757 cm-1).”
Awonusi 等 - 2007 - Carbonate assignment and calibration in the raman DOI: 10.1007/s00223-007-9034-0 -
Alkyl C-H kumpiyansa 1.0
“removing residual reactants and byproducts, Open cm(cid:1)1 -CH peak appearing at 757 possibly represents the”
Surface-initiated atom transfer radical polymerization grafting from nanoporous cellulose gels to create hydrophobic nanocomposites DOI: 10.1039/c8ra04163f -
C-S single bond kumpiyansa 1.0
“[δ(CH)], 3+)], 1380c 1360c symb(NH )], and changes indicate the following: (1) the presence of cystine in cm-1 cm-1, [(ρ C-S 1326c w(CH 2)] SEIRA signals increase in intensity P C-G) and two one rotamer on AgNPs (at 757 cm-1) compared to th”
Proniewicz 等 - 2021 - Is the Use of Surface-Enhanced Infrared Spectrosco DOI: 10.1021/acs.jpcb.1c00546 -
Carboxyl (COOH) kumpiyansa 1.0
“757/784 827/811 acid bands, such as and Glycogen bands were demonstrated to play an important role as a discriminant spectral marker”
Vibrational Spectroscopy for In Vitro Monitoring Stem Cell Differentiation DOI: 10.3390/molecules25235554 -
kumpiyansa 1.0
“Also, peak at 757cm-1 indicates crystallization technique presence of halogen-hydrogen interaction.”
Shete 等 - 2018 - Solid State Characterization and Tableting Studies DOI: 10.5530/ijper.52.1.8 -
Carboxyl (COOH) kumpiyansa 1.0
“For the COS-Sal, due to the introduction of acetylsalicylic acid, the characteristic absorption peak of benzene ring appeared in the infrared spectrum, such cm-1 cm-1 as 1604 and 1483 benzene ring skeleton vibration peak, and 757 indicates”
Characterization of Different Salt Forms of Chitooligosaccharides and Their Effects on Nitric Oxide Secretion by Macrophages DOI: 10.3390/molecules26092563
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