What absorbs at 3640 cm⁻¹ in an FTIR spectrum?
A band near 3640 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
可能的官能团归属
| 官能团 | 支持性事实 | 引用来源 | 最高置信度 |
|---|---|---|---|
| Hydroxyl (O-H) | 4 | 4 | 0.95 |
| Oxygen heterocycle | 1 | 1 | 0.7 |
排名反映了累积的文献证据，而非单一的权威规则。请始终对照您的样品背景进行确认。
这些分配背后的文献
-
Hydroxyl (O-H) 置信度 0.95
“Explicit assignment: 'new sharp OH-stretching fundamentals at ~3640'”
Skoubris 等 - 2013 - STRUCTURAL CHARACTERIZATION OF REDUCED-CHARGE MONT DOI: 10.1346/CCMN.2013.0610207 -
Hydroxyl (O-H) 置信度 0.9
“Text: 'strong, narrow band of the OH stretching ... at 3640'”
Khan 等 - 2022 - Efficient photodegradation of orange II dye by nic DOI: 10.1007/s13201-022-01647-x -
Hydroxyl (O-H) 置信度 0.9
“O-H stretch associated with calcium hydroxide.”
Sotiropoulou 等 - 2018 - Advanced analytical investigation on degradation m DOI: 10.1016/j.microc.2018.03.007 -
置信度 0.9
“Explicit assignment: 'C-S-H band on day 28. The infrared spectrum wave number ... 3,640 cm-1'”
Sutan 等 - 2015 - Sustainable Nanopozzolan Modified Cement Characte DOI: 10.1155/2015/713258 -
Hydroxyl (O-H) 置信度 0.9
“Text: 'peak related to the OH stretching of portlandite (CH) at 3640 cm-1'”
dos Santos 等 - 2021 - Application of Fourier Transform infrared spectros DOI: 10.1016/j.conbuildmat.2021.125413 -
置信度 0.8
“Snippet: 'characteristic spectra showed two bands at 3640 and 3560 of the water forming H-bonds to the anions'.”
MacMillan 等 - 2012 - Interaction of Water Vapor with the Surfaces of Im DOI: 10.1021/jp305029n -
Oxygen heterocycle 置信度 0.7
“Absorbance at 3640 and 3381 cm-1 attributed to epoxy.”
Jollands 等 - 2021 - A combined Fourier transform infrared and Cr K-edg DOI: 10.5194/ejm-33-113-2021 -
置信度 0.6
“Text mentions 'sharp band at 3640' and 'O-H bound in different types of hydrates' in context”
Kledynski 等 - 2017 - Investigation of hydration products of fly ash-sla DOI: 10.1007/s10973-017-6233-4
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