What absorbs at 1007 cm⁻¹ in an FTIR spectrum?
A band near 1007 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
Snabbt svar
A band near 1007 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.
Möjliga identifieringar av funktionella grupper
| Funktionell grupp | Stödjande fakta | Citerade källor | Högsta förtroende |
|---|---|---|---|
| Siloxane (Si-O-Si) | 3 | 3 | 1,0 |
| Silicon-oxygen (Si-O) | 3 | 3 | 1,0 |
| Silicon (Si) | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Ketone | 2 | 2 | 1,0 |
| Ester | 2 | 2 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Carbonyl (C=O) | 2 | 2 | 1,0 |
| Amide | 2 | 2 | 1,0 |
| Methacrylate | 2 | 2 | 1,0 |
| C-O single bond | 2 | 2 | 1,0 |
| Acetate | 2 | 2 | 1,0 |
| Aromatic ring | 2 | 2 | 1,0 |
| Phosphate (PO4) | 2 | 2 | 1,0 |
| Metal hydroxyl | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| C-S single bond | 1 | 1 | 1,0 |
| Carbohydrate | 1 | 1 | 1,0 |
| Sulfate (SO4) | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Metal oxo | 1 | 1 | 1,0 |
Rankingen speglar ackumulerade litteraturbevis, inte en enda auktoritativ regel. Bekräfta alltid mot din provkontext.
Möjliga material
| Material | Stödjande toppar | Överlappande grupper | Citerade källor |
|---|---|---|---|
| glucose | 1007, 1740, 1400 | Hydroxyl (O-H) | 1 |
| TiO2 | 1007, 1700, 1093 | Hydroxyl (O-H) | 1 |
| biochar | 1007, 1640, 1115 | Hydroxyl (O-H) | 1 |
Material visas endast när samma litteraturpool stöder detta band och minst en ytterligare karakteristisk topp.
Spektrumlogik
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 1007 cm⁻¹ is usually not enough for material identification by itself.
Användning i verkligheten
Denna typ av fråga är vanlig inom polymeridentifiering, screening av okänd plast, felsökning av kvalitetskontroll, verifiering av återvunnet material och litteraturstödd toppidentifieringsgranskning.
Vanliga misstag
- Behandla ett isolerat band som bevis på ett material utan att kontrollera minst en eller två stödjande toppar.
- Ignorerar överlapp: flera funktionella grupper kan bidra nära samma vågtal.
- Hoppa över validering när tillsatser, blandningar, oxidation eller föroreningar kan förvränga spektrat.
Verifieringsråd
När oklarhet kvarstår, validera hypotesen med DSC, GC-MS eller TGA, särskilt för blandningar, nedbrutna prover och fyllda polymerer.
Litteratur bakom dessa identifieringar
-
Metal oxo förtroende 1,0
“LLM confirmed rule peak-group candidate”
Optical and structural characterization of quadruplet and quintuplet molybdenum-containing phosphate glasses DOI: 10.1142/S0217984916502705 -
Water (H2O) förtroende 1,0
“l cm-1 (cid:1)C, "degenerate" between 200 and 300 phosphoric acid undergoes condensa- [P(OH) very strong bands at 1007 and 1165 3 43tion reactions with loss of water molecules, leading to the stretching mode of PO ], a weak band at and PO s”
Yi 等 - 2011 - Phosphine Adsorption Removal from Yellow Phosphoru DOI: 10.1021/ie101622x -
C-O single bond förtroende 1,0
“Peak was observed at 1006.7 of smooth and non-homogeneous surface, while the 6b the the C-OH stretch vibration within the cellulosic structure.”
Nanobiocatalyst beds with Fenton process for removal of methylene blue DOI: 10.1007/s13201-021-01367-8 -
Sulfate (SO4) förtroende 1,0
“The characteristic peaks at 1131 and cm-1 1007 correspond to the stretching vibration of sulfate (-S = O).”
Development of New Amphiphilic Catalytic Steam Additives for Hydrothermal Enhanced Oil Recovery Techniques DOI: 10.3390/catal12080921 -
Aromatic ring förtroende 1,0
“However, the representative peaks for aromatic carbon ap1007/s11356-013-1659-0.”
Simultaneous immobilization of heavy metals in soil environment by pulp and paper derived nanoporous biochars DOI: 10.1007/s40201-018-0294-6 -
Siloxane (Si-O-Si) förtroende 1,0
“Part of doublet assigned to Si-O-Si.”
Bao 等 - 2018 - Manufacturing and characterization of long-acting DOI: 10.1016/j.ijpharm.2018.09.004. -
Silicon (Si) förtroende 1,0
“the one located at 1089 cm-1 in MK to 1007 cm-1 due to the asymmetric stretching of the Si-O-T band”
Metakaolin-Based Geopolymer with Added TiO2 Particles: Physicomechanical Characteristics DOI: 10.3390/coatings7120233 -
Carbohydrate förtroende 1,0
“2, however, the contribution of glucose cannot be neglected, especially due to the bands at 1007, 1045, 1072 and cm-1.”
Leopold 等 - 2011 - Quantification of carbohydrates in fruit juices us DOI: 10.3233/SPE-2011-0529
Har du ett spektrum med detta band?
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