What absorbs at 684 cm⁻¹ in an FTIR spectrum?
A band near 684 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
Možne dodelitve funkcionalnih skupin
| Funkcionalna skupina | Podporna dejstva | Citirani viri | Najvišje zaupanje |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 3 | 3 | 1,0 |
| Alkyl C-H | 2 | 2 | 1,0 |
| Metal oxygen | 2 | 2 | 1,0 |
| Silicon (Si) | 2 | 2 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Fluorine (C-F) | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
Razvrstitev odraža zbrane literaturne dokaze, ne enega avtoritativnega pravila. Vedno preverite glede na kontekst vašega vzorca.
Literatura za temi dodelitvami
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Silicon (Si) zaupanje 1,0
“The absorption band at 684 cm-1 in kaolinite could be attributed to Si-O bending;”
Alkhabbas 等 - 2023 - Jordanian Kaolinite with TiO2 for Improving Solar DOI: 10.3390/molecules28030989 -
zaupanje 1,0
“684,and areattributed tothevibrations of theSiO 2 The nitrogen adsorption/desorption isotherms of Gh-B group (Figure 3).”
Allaoui 等 - 2020 - Kinetic Study of the Adsorption of Polyphenols fro DOI: 10.1155/2020/7293189 -
Alkyl C-H zaupanje 1,0
“The bending vibrations of plane verified at positions 684, 833 cm-1 C-H The bending vibrations of plane verified at positions 684, 833 and 957 [27,28].”
New Hybrid PVC/PVP Polymer Blend Modified with Er2O3 Nanoparticles for Optoelectronic Applications DOI: 10.3390/polym15030684 -
Silicon (Si) zaupanje 1,0
“According to the literatures [34, 36], the cm-1 presence of weak absorption peaks at about 669 and cm-1 684 is related to the vibrations modes of Si-O band.”
Magnetron sputtering technique for analyzing the influence of RF sputtering power on microstructural surface morphology of aluminum thin films deposited on SiO2/Si substrates DOI: 10.1007/s00339-021-04892-0 -
N h zaupanje 1,0
“After the peaks, the spectrum of PANI exhibits peaks at 684 and 1581 cm-1, desorption, NZC-g-PANI was washed with a 0.1 N HCl which may be related to NH wagging and the presence 2 group.39 solution followed by drying for reuse in the adsorp”
Bir 等 - 2022 - Multifunctional Ternary NLPZnO@L-cysteine-grafted DOI: 10.1021/acsomega.2c04936 -
zaupanje 1,0
“Text: 'peak of 833 and 684 representing the presence of halo group'”
Hetero-Polysaccharides Secreted from Dunaliella salina Exhibit Immunomodulatory Activity Against Peripheral Blood Mononuclear Cells and RAW 264.7 Macrophages DOI: 10.1007/s12088-019-00818-w -
Hydroxyl (O-H) zaupanje 1,0
“cm1 cm1 corresponds to -OH bending vibrations complexed with Mn atoms and those around 684 and cm1 596 belongs to stretching Mn-O bonds present within the MnO structure [30] and the changes 2 observed with the addition of MnO to the polymer”
Helen 等 - 2023 - Amelioration of ionic conductivity (303 K) with th DOI: 10.21203/rs.3.rs-1557220/v1 -
Metal oxygen zaupanje 1,0
“In addition, a sloping decreasing peak with a peak minimum at cm-1 684 ascribed by the asterisk indicates TiO 2.”
Multi-Modal Compositional Analysis of Layered Paint Chips of Automobiles by the Combined Application of ATR-FTIR Imaging, Raman Microspectrometry, and SEM/EDX DOI: 10.3390/molecules24071381
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