What absorbs at 668 cm⁻¹ in an FTIR spectrum?
A band near 668 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 8 cited sources
Atribuiri posibile ale grupelor funcționale
| Grup funcțional | Fapte suport | Surse citate | Încredere maximă |
|---|---|---|---|
| Silicon (Si) | 2 | 2 | 1,0 |
| Carbon dioxide | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Metal sulfur | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
Clasamentul reflectă dovezile acumulate din literatură, nu o singură regulă autoritară. Confirmați întotdeauna în contextul mostrei dvs.
Literatura din spatele acestor atribuiri
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Silicon (Si) încredere 1,0
“The epitaxcm-1 cm-1, absorption peaks at 668 and 951 corresponding 2O (0001) [6], ial growths of cubic AlN on Si (100) [5], Al 3 to the transverse and longitudinal optical vibration modes.”
Fu 等 - 2012 - Structural, optical and electrical properties of c DOI: 10.1007/s00339-011-6713-5 -
Metal oxygen încredere 1,0
“The absorption bands at 668 1502 cm-1 cm-1 and 1440 indicate the metallic stretching vibrations in Fe - O.”
Effect of Gd and Nb on Dielectric and Magnetic Transition temperature of BaTiO3- Li0.5Fe2.5O4 Composites DOI: 10.1016/j.physb.2019.02.035 -
Metal sulfur încredere 1,0
“It may be noted here that cm(cid:3)1 cm(cid:3)1 absorption peaks at 668 and (cid:2)703 for Cd-S (cid:2) stretching modes have been observed by Kawar et al.”
Utilization of residual CdCl2 in CBD-CdS to realize grain growth in CdTe: A novel route DOI: 10.1016/j.materresbull.2013.08.006 -
Hydroxyl (O-H) încredere 1,0
“5 UV-Vis absorption spectra of GO cm(cid:2)1, whereas for rGO-Co 3O 4, the peaks of Co-O and Co548 cm(cid:2)1 along with the peaks of O-H, O appeared at 668 and 578”
Synthesis of Self-Assembled rGO-Co3O4 Nanoparticles in Nanorods Structure for Supercapacitor Application DOI: 10.1007/s11665-018-3361-3 -
încredere 1,0
“The absorption band seen at 668 Based on the surface investigation, AFM pictures of cm-1 corresponds to the typical stretching collision of OMnO 2, Cu, and Cu doped MnO nanoparticles were analysed Mn-O, indicating that MnO is present in the”
Shoba 等 - 2022 - Copper nanoparticles incorporated manganese dioxid DOI: 10.14447/jnmes.v25i3.a05 -
încredere 1,0
“The characteristic cm-1 cm-1 vibrations of sulfate can be seen at 1100 (S-O stretch) and around 668 and 597 PK116431).”
Assessment of Easily Accessible Spectroscopic Techniques Coupled with Multivariate Analysis for the Qualitative Characterization and Differentiation of Earth Pigments of Various Provenance DOI: 10.3390/min12060755 -
C-O single bond încredere 1,0
“668.09cm-1 powder was then washed with ultrapure water to remove function (C-OH), and a band at which char60°C.”
Fegousse 等 - 2019 - Pineapple Bark Performance in Dyes Adsorption Opt DOI: 10.1155/2019/3017163 -
Carbon dioxide încredere 1,0
“InthefirstdecompositionstageofBA+10%L-M(Figure3a),bandsat2360-2310cm-1,attributedto cm-1, asymmetric stretching vibrations, and at 668 associated with the degenerate bending vibrations cm-1 of carbon dioxide, were mainly visible [63,64].”
Preparation, Thermal, and Mechanical Characterization of UV-Cured Polymer Biocomposites with Lignin DOI: 10.3390/polym12051159
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