What absorbs at 1002 cm⁻¹ in an FTIR spectrum?
A band near 1002 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
Stutt svar
A band near 1002 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Mögulegar úthlutun virkra hópa
| Virkur hópur | Stuðningsstaðreyndir | Tilvitnuð heimildir | Mesta öryggi |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 5 | 5 | 1,0 |
| Silicon (Si) | 4 | 4 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Amide | 2 | 2 | 1,0 |
| Ketone | 1 | 1 | 1,0 |
| Ester | 1 | 1 | 1,0 |
| Carbonyl (C=O) | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Secondary amine | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Metal oxygen | 1 | 1 | 1,0 |
| S eq o | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Anhydride | 1 | 1 | 1,0 |
| Alkene (C=C) | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
Röðun endurspeglar uppsöfnuð ritrýnisgögn, ekki eina valdboðsreglu. Staðfestu alltaf í samhengi við sýnið þitt.
Möguleg efni
| Efni | Stuðningstindar | Skarast hópar | Tilvitnuð heimildir |
|---|---|---|---|
| PDMS | 1002, 873, 1080 | Silicon-oxygen (Si-O), Silicon (Si) | 1 |
Efni birtast aðeins þegar sama bókmenntasafn styður þessa band og að minnsta kosti einn viðbótar einkennandi hámark.
Rófrök
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1002 cm⁻¹ is usually not enough for material identification by itself.
Raunveruleg notkun
Þessi tegund fyrirspurna er algeng við auðkenningu fjölliða, skimun óþekktra plasttegunda, bilanaleit í gæðaeftirliti, staðfestingu endurunnins efnis og bókmenntabakkaða endurskoðun á hápunktum.
Algeng mistök
- Meðhöndla eina einangraða öldulengd sem sönnun á efni án þess að athuga að minnsta kosti einn eða tvo stuðningstoppa.
- Hunsa skörun: mörg virkir hópar geta lagt sitt af mörkum nálægt sömu bylgjutölunni.
- Að sleppa staðfestingu þegar aukefni, blöndur, oxun eða mengun geta brenglað litrófið.
Staðfestingarráðgjöf
Þegar tvíræðni er eftir, staðfestu tilgátuna með DSC, GC-MS eða TGA, sérstaklega fyrir blöndur, niðurbrotin sýni og fylltar fjölliður.
Ritlist á bak við þessar úthlutanir
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Alkyl C-H öryggi 1,0
“2 759cm-1 1″-H 2′, 2″-H) confirming C-H and 2, are giving cross peaks that there is The peaks at 1002, 966, 909 and are due to wagging of”
Reactive grafting of 3-octanoylthio-1-propyltriethoxysilane in styrene butadiene rubber_ Characterization and its effect on silica reinforced tire composites DOI: 10.1016/j.polymer.2019.121693 -
Anhydride öryggi 1,0
“cm-1, At 1002 the peak shows CO-O-CO stretching, which indicates the presence of an anhydride group.”
Fatima 等 - 2021 - Extraction and Chemical Characterization of Humic DOI: 10.3390/su13168969 -
Silicon (Si) öryggi 1,0
“3: the symmetric stretching at 3057 and 3018 the ¼¼CH cm(cid:2)1 band centered at 1002 is associated with the Si-O-Si asymmetric and symmetric stretching at 2974 and 2935”
Aresta 等 - 2012 - Initiated-chemical vapor deposition of organosilic DOI: 10.1116/1.4711762 -
Silicon (Si) öryggi 1,0
“increase in their intensity in the spectra of the sample exposed to the temperature of 1000 °C and a clear shift of the maximum intensity of the main band from 1002 to 1032 cm-1, °C and a clear shift of the maximum intensity of the main ban”
Dehydroxylation of Perlite and Vermiculite: Impact on Improving the Knock-Out Properties of Moulding and Core Sand with an Inorganic Binder DOI: 10.3390/ma14112946 -
Amide öryggi 1,0
“As vibra- (1655cm-1), identified increased peak intensities for amide I tional spectroscopic techniques are label free, highly sensitive and amide III (1260cm-1), (1002cm-1) allow the rapid detection of intracellular biochemical information”
Recent advances in the vibrational spectroscopic diagnosis of non-small cell lung cancer DOI: 10.1016/j.vibspec.2019.102946. -
S eq o öryggi 1,0
“2 cm-1, Four peaks are found on the spectrum of the non-carbonized resin at 1002 cm-1, cm-1, cm-1 1038 1134 and 1158 which indicates the presence of sulfonic acid groups (Fig.”
Application of carbonized ion exchange resin beads as catalyst support for gas phase hydrogenation processes DOI: 10.1007/s11144-019-01694-7 -
Silicon (Si) öryggi 1,0
“cm-1 Similarly, bulk H 4SiW 12O 40(TSiA) exhibited bands at 1002, 980, 922 and 881 due to s(W=O t), as(W=O t), (Si-O a) and (W-O b-W), respectively [25-26].”
Promoted V2O5/TiO2 catalysts for selective catalytic reduction of NO with NH3 at low temperatures DOI: 10.1016/j.apcatb.2015.10.044 -
Hydroxyl (O-H) öryggi 1,0
“3344 3345 3500 O-H stretch in H-bonded OH/propOH [39,40] 1275 cm-1 and 1252 cm-1 (TPOZ), 1100 cm-1 (TEOS), 1128, 1107 and 1002 cm-1 (TPOZ), 2962/2905 2962/2905 2962/2905 C-H asym/sym stretch in Si-CH [36-38] 3”
Electron Beam Irradiation on the Production of a Si- and Zr-Based Hybrid Material: A Study by FTIR and WDXRF DOI: 10.3390/ma16020489
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