What absorbs at 3642 cm⁻¹ in an FTIR spectrum?
A band near 3642 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 7 cited sources
가능한 작용기 할당
| 작용기 | 지원 사실 | 인용 출처 | 최고 신뢰도 |
|---|---|---|---|
| Hydroxyl (O-H) | 5 | 5 | 0.9 |
| Water (H2O) | 1 | 1 | 0.9 |
| Silanol (Si-OH) | 1 | 1 | 0.8 |
순위는 단일 권위 규칙이 아닌 축적된 문헌 증거를 반영합니다. 항상 샘플 상황에 대해 확인하세요.
이 할당의 배경이 되는 문헌
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신뢰도 1.0
“Explicit assignment: 'narrow band of free hydroxyl group of calcium hydroxide at 3642 cm-1'”
Abu Zeid 等 - 2017 - Chemistry and Bioactivity of NeoMTA Plus (TM) vers DOI: 10.1155/2017/8736428 -
Hydroxyl (O-H) 신뢰도 0.9
“Stretching band of water.”
Maeda 等 - 1999 - Chromophore-protein-water interactions in the L in DOI: 10.1021/bi9907072 -
Hydroxyl (O-H) 신뢰도 0.9
“Explicit assignment: stretching mode of hydroxyl group.”
Molla 等 - 2022 - Facile extraction and characterization of calcium DOI: 10.1098/rsos.220681 -
Hydroxyl (O-H) 신뢰도 0.9
“Explicit assignment: 'absorption band at 3642 cm-1 as the stretch of O-H'”
Nunes 等 - 2021 - Chitosan-Based Biomaterial, Calcium Hydroxide and DOI: 10.3390/ma14030488 -
Hydroxyl (O-H) 신뢰도 0.9
“Explicit assignment: portlandite band (free O-H stretching band at ~3642 cm-1).”
Zhang 等 - 2020 - CONTRIBUTION OF ENZYMATIC METHOD FOR ANALYZING SUC DOI: 10.21577/0100-4042.20170561 -
Silanol (Si-OH) 신뢰도 0.8
“Text: '3642 cm-1 peak' associated with silanols.”
Montano-Miranda 和 Muscat - 2003 - Gas-phase HFvapor etching of thermal silicon diox DOI: 10.4028/www.scientific.net/SSP.92.207 -
Hydroxyl (O-H) 신뢰도 0.8
“Text: 'bands centered around 3642, 3566' in stretching region”
Sun 等 - 2008 - Trace of the Interesting V-Shaped Dynamic Mechan DOI: 10.1021/jp806805r
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