What absorbs at 1217 cm⁻¹ in an FTIR spectrum?
A band near 1217 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
Kiire vastus
A band near 1217 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.
Võimalikud funktsionaalrühmade määramised
| Funktsionaalrühm | Toetavad faktid | Tsiteeritud allikad | Kõrgeim usaldusväärsus |
|---|---|---|---|
| Secondary amine | 3 | 3 | 1,0 |
| C n single bond | 3 | 3 | 1,0 |
| Amide | 3 | 3 | 1,0 |
| Alkene (C=C) | 2 | 2 | 1,0 |
| Hydroxyl (O-H) | 2 | 2 | 1,0 |
| Alkyl C-H | 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 |
| Silicon (Si) | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Fluorine (C-F) | 1 | 1 | 1,0 |
| Nitrate | 1 | 1 | 1,0 |
Reiting kajastab kogunenud kirjanduslikke tõendeid, mitte ühte autoriteetset reeglit. Kinnitage alati oma proovi kontekstis.
Võimalikud materjalid
| Materjal | Toetavad piigid | Kattuvad rühmad | Tsiteeritud allikad |
|---|---|---|---|
| epoxy | 1217, 1660, 1735 | Amide | 1 |
| silver nanoparticles | 1217, 1636, 1631 | Amide | 1 |
Materjale kuvatakse ainult siis, kui sama kirjanduse kogum toetab seda riba ja vähemalt ühte täiendavat iseloomulikku piiki.
Spektri loogika
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 1217 cm⁻¹ is usually not enough for material identification by itself.
Reaalse maailma kasutus
Seda tüüpi päring on tavaline polümeeri tuvastamisel, tundmatu plasti sõeluuringul, kvaliteedikontrolli probleemide lahendamisel, ringlussevõetud materjali kontrollimisel ja kirjandusel põhineval piirkinnituste ülevaatel.
Levinud vead
- Ühe isoleeritud riba käsitlemine materjali tõendina ilma vähemalt ühte või kahte toetavat piiki kontrollimata.
- Ülekattumise ignoreerimine: mitu funktsionaalrühma võivad anda panuse sama lainearvu lähedal.
- Valideerimise vahelejätmine, kui lisandid, segud, oksüdatsioon või saastumine võivad spektrit moonutada.
Kontrollimise nõuanne
Kui ebakindlus püsib, kinnitage hüpotees DSC, GC-MS või TGA abil, eriti segude, lagunenud proovide ja täidetud polümeeride puhul.
Nende määramiste taga olev kirjandus
-
Hydroxyl (O-H) usaldusväärsus 1,0
“C─C 1510-1440 C stretch of aromatic ring 1496 C─O phenolic stretch 1217 ~1200 C─H”
Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy DOI: 10.1002/app.48404 -
Alkene (C=C) usaldusväärsus 1,0
“8 Textile fabrics dyed with ethanol and acetone extracts of the red pigment and colour hues obtained after applying different mordant to the textile materials cm1 1 identifies different substances within a test sample and peaks around 1217”
Resourcefulness of propylprodigiosin isolated from Brevundimonas olei strain RUN-D1 DOI: 10.1186/s13568-023-01579-y -
Nitrate usaldusväärsus 1,0
“In fact, they are still evident among the nitrate peaks cm-1 The three peaks located at 1217, 1388, and 1471 can only 4+) that form, and it is the s(NH ions bound to Brønsted acid (cid:228)”
Pena 等 - 2004 - Identification of surface species on titania-suppo DOI: 10.1021/jp0313122 -
Amide usaldusväärsus 1,0
“peak values at 1496.93 The stretching vibration of C-N group of RR2 appears at 1217 cm-1 N The peaks at 1186.54, 1129.39, 1048.24 and 668.21 showed S=O stretching vibrations.”
Sakthisharmila 等 - 2017 - A characteristic study on generation and interacti DOI: 10.1016/j.molliq.2017.01.106 -
usaldusväärsus 1,0
“For male smokers with C-F stretch, 1083.1 corresponding to organic silicone or cm-1 COPD and non-smokers with COPD, the values were observed as silicone/aliphatic flora C-F stretch, 1217.4 corresponding to cm21 58611.3 52.7669.25 and respec”
Dey 等 - 2014 - Role of Glutathione S Transferase Polymorphism in DOI: 10.1371/journal.pone.0096739 -
Hydroxyl (O-H) usaldusväärsus 1,0
“In this FTIR spectrum, some peaks located in the 1994 cm-1, 1949 cm-1, 1739 cm-1, 1637 cm-1, 1522 cm-1, 1437 cm-1, 1366 cm-1, 1217 cm-1, 1026 cm-1, 898 cm1994 cm-1, 1949 cm-1, 1739 cm-1, 1637 cm-1, 1522 cm-1, 1437 cm-1, 1366 cm-1, 1217 cm-1”
Mondal 等 - 2020 - Anti-Bacterial and Anti-Candidal Activity of Silve DOI: 10.3390/biom10060944 -
Amide usaldusväärsus 1,0
“the pure drug showed the characteristic peaks at 1650.76 due to C=O stretching, at 3364.90 due to O-H stretching, 3252.43 due to N-H stretch, 1435.82 due to C-F stretching, 1316.56 due to C-O stretching, 1217.08 due to C-N stretching, and a”
Dissolution Improvement of Atorvastatin Calcium using Modified Locust Bean Gum by the Solid Dispersion Technique DOI: 10.3797/scipharm.1301-23 -
usaldusväärsus 1,0
“with the same electrode heated up to Pristine silicon electrode dominantroleofP-FcontainingspeciesinSEIofSi-basedelectrodes gives bands corresponding to O-Si-O and Si-O-Si vibrations (1217, reported.36,37 is 1109,883,496cm-1)andtoNaCMC(1598”
Profatilova 等 - 2012 - Thermally Induced Reactions between Lithiated Nano DOI: 10.1149/2.095205jes
Kas teil on selle ribaga spekter?
Laadige üles oma FTIR spekter ja saage sekunditega täielik tõlgendusaruanne — piikide määramised kirjandusviidetega, raamatukogu vasted ja usaldusväärsusega hinnatud tõendite ahel.