What absorbs at 640 cm⁻¹ in an FTIR spectrum?
A band near 640 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
Ugawaji unaowezekana wa vikundi vya kazi
| Kikundi cha kazi | Ukweli unaounga mkono | Vyanzo vilivyotajwa | Uaminifu wa juu |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 0.9 |
| Silicon hydride | 3 | 2 | 0.9 |
| Siloxane (Si-O-Si) | 1 | 1 | 0.9 |
| Alkyl C-H | 1 | 1 | 0.9 |
Cheo kinaonyesha ushahidi wa fasihi uliokusanywa, si sheria moja yenye mamlaka. Thibitisha kila mara dhidi ya mazingira ya sampuli yako.
Fasihi nyuma ya ugawaji huu
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Alkyl C-H uaminifu 0.9
“Text: 'C-H stretching: at 640'”
Ristova 等 - 2005 - Effect of long-term He-Ne laser light exposure and DOI: 10.1088/0268-1242/20/10/004 -
Silicon hydride uaminifu 0.9
“Bands at 640 cm-1 attributed to wagging modes of all Si-H vibrations.”
Seba 等 - 2009 - Correlation between physicochemical and electrical DOI: 10.4028/www.scientific.net/MSF.609.129 -
uaminifu 0.9
“Explicit assignment: ABO3 vibration at 640 cm-1.”
Victoria 等 - 2015 - An insight in the structural, morphological, elect DOI: 10.1016/j.matchemphys.2015.07.015 -
Metal oxygen uaminifu 0.9
“Nb-O bond characteristic”
Wang 和 Jiang - 2011 - Synthesis and Characterization of LiNbO3 Powders b DOI: 10.1080/00150193.2011.554260 -
Metal oxygen uaminifu 0.9
“Same as above.”
Crocella 等 - 2012 - On the Role of Morphology of CoFeO4 Spinel in Meth DOI: 10.1021/jp304355d -
Metal oxygen uaminifu 0.9
“Ti-O stretching band between 640 and 700 cm-1.”
Eleuterio 等 - 2020 - XPS and FTIR Studies of DC Reactive Magnetron Sput DOI: 10.3390/coatings10030287 -
Siloxane (Si-O-Si) uaminifu 0.9
“Text: 'peak at 640 are attributed to the Si-O-Si stretching vibrations'”
Kayed 和 Kurd - 2022 - The Effect of Annealing Temperature on the Structu DOI: 10.21203/rs.3.rs-246154/v1 -
uaminifu 0.9
“Band at 640 cm-1 corresponds to elongation vibration of S-O bond of sodium sulfate.”
Mezzatesta 等 - 2023 - Anthropological and analytical studies of two Egyp DOI: 10.1016/j.matlet.2022.133265
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Pakia wigo wako wa FTIR na upate ripoti kamili ya tafsiri — ugawaji wa vilele na marejeleo ya fasihi, ulinganishaji wa maktaba, na mlolongo wa ushahidi wenye kiwango cha uaminifu — kwa sekunde.
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