What absorbs at 3316 cm⁻¹ in an FTIR spectrum?
A band near 3316 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
إجابة سريعة
A band near 3316 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.
تعيينات المجموعات الوظيفية المحتملة
| مجموعة وظيفية | حقائق داعمة | المصادر المستشهد بها | أعلى ثقة |
|---|---|---|---|
| Hydroxyl (O-H) | 6 | 6 | 1,0 |
| N h | 4 | 4 | 1,0 |
| Secondary amine | 2 | 2 | 1,0 |
| Nitrogen heterocycle | 1 | 1 | 1,0 |
| Chlorine | 1 | 1 | 1,0 |
| Hydrogen bond | 1 | 1 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
يعكس الترتيب الأدلة الأدبية المتراكمة، وليس قاعدة واحدة موثوقة. تأكد دائمًا من سياق عينتك.
المواد المحتملة
| مادة | القمم الداعمة | المجموعات المتداخلة | المصادر المستشهد بها |
|---|---|---|---|
| polyvinyl alcohol | 3316, 1141, 1640 | Hydroxyl (O-H) | 1 |
| polyurethane | 3316, 2270, 1700 | N h | 1 |
| polysaccharides | 3316, 1053, 1143 | Hydroxyl (O-H) | 1 |
| collagen | 3316, 1408, 1660 | N h | 1 |
تظهر المواد فقط عندما يدعم نفس مجموعة الأدبيات هذا النطاق وذروة مميزة إضافية واحدة على الأقل.
منطق الطيف
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 3316 cm⁻¹ is usually not enough for material identification by itself.
الاستخدام في العالم الحقيقي
هذا النوع من الاستعلام شائع في تحديد البوليمر، وفحص البلاستيك غير المعروف، واستكشاف أخطاء مراقبة الجودة، والتحقق من المواد المعاد تدويرها، ومراجعة تعيين القمم المدعومة بالأدبيات.
الأخطاء الشائعة
- معالجة نطاق معزول واحد كدليل على المادة دون التحقق من ذروة داعمة واحدة أو اثنتين على الأقل.
- تجاهل التداخل: يمكن أن تساهم مجموعات وظيفية متعددة بالقرب من نفس رقم الموجة.
- تخطي التحقق من الصحة عندما قد تؤدي الإضافات أو الخلائط أو الأكسدة أو التلوث إلى تشويه الطيف.
نصيحة التحقق
عندما يبقى الغموض، تحقق من الفرضية باستخدام DSC أو GC-MS أو TGA، خاصة للمخاليط والعينات المتحللة والبوليمرات المملوءة.
الأدبيات وراء هذه التعيينات
-
Alkyl C-H الثقة 1,0
“cm-1 cm-1 and remaining OH groups at 3316 The C-H stretches was observed at 2926 and 2854 cm-1, cm-1 cm-1 followed by peaks at 1511 1213 and 1068 which indicates the urethane linkages of N-”
Norshahli 等 - 2018 - Mechanical Properties of Palm Oil Polyol based Pol DOI: 10.1088/1742-6596/1082/1/012041 -
الثقة 1,0
“The peak at 3316 cm-1 (observed in mushrooms produced in WS, cm-1 3313 and 3301 for GM and OL, respectively) can be attributed to the N-H stretching vibration and shifted to 3313 and 3301 cm-1 for GM and OL, respectively) can be attributed”
Pleurotus Mushrooms Content in Glucans and Ergosterol Assessed by ATR-FTIR Spectroscopy and Multivariate Analysis DOI: 10.3390/foods9040535 -
الثقة 1,0
“The stretching vibrations of N-H in the Fermi resonance, which ocapproximately 3316 The stretching vibrations of N-H in the Fermi resonance, which curred at around 2932 cm-1, formed amide B bands.”
Functionalised Hybrid Collagen-Elastin for Acellular Cutaneous Substitute Applications DOI: 10.3390/polym15081929 -
Hydroxyl (O-H) الثقة 1,0
“(cm-1) Wavenumbers Assignment 3316 O-H stretching vibration 2900”
Incorporation of In Situ Synthesized Nano-Copper Modified Phenol-Formaldehyde Resin to Improve the Mechanical Properties of Chinese Fir: A Preliminary Study DOI: 10.3390/polym13060876 -
Hydroxyl (O-H) الثقة 1,0
“For all samples, peaks between 3289 cm-1 and 3316 cm-1 were observed, which relate to the stretching of hydroxyl (OH) groups due to the formation of hydrogen bonds [50].”
Encapsulation of Concentrated Solution Obtained by Block Freeze Concentration in Calcium Alginate and Corn Starch Calcium Alginate Hydrogel Beads DOI: 10.3390/gels9050374 -
الثقة 1,0
“1256 C-N stretching of aromatic amine 5 714 C-Cl stretching cm-1 As can be seen in Figure 8, the spectra exhibited a distinctive peak at 3316 due”
Preparation and Physicochemical Characterization of a Diclofenac Sodium-Dual Layer Polyvinyl Alcohol Patch DOI: 10.3390/polym13152459 -
Hydroxyl (O-H) الثقة 1,0
“Characteristic peaks were found at 1631.40 and 3316.43 The vibrational band at cm-1 3316.43 indicated O-H stretching due to the involvement of phenol or alcohol as a cm-1 functional group, whereas the stretching band at 1631.40 represented”
Development of Iron Nanoparticles (FeNPs) Using Biomass of Enterobacter: Its Characterization, Antimicrobial, Anti-Alzheimer’s, and Enzyme Inhibition Potential DOI: 10.3390/mi13081259 -
N h الثقة 1,0
“The BZ structure (signals at 1222 and 948 cm-1) remained for the uncured Por-BZ/Ni and cm-1 Meanwhile, the signal at 3316 for NH stretching of the pyrrole ring had disappeared, Por-BZ/Zn complexes.”
Zhang 等 - 2022 - Metal Complexes of the Porphyrin-Functionalized Po DOI: 10.3390/polym14030449
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