What absorbs at 549 cm⁻¹ in an FTIR spectrum?
A band near 549 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
त्वरित उत्तर
A band near 549 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.
संभाव्य कार्यात्मक-गट नियुक्त्या
| कार्यात्मक गट | समर्थन करणारी तथ्ये | उद्धृत स्रोत | सर्वोच्च आत्मविश्वास |
|---|---|---|---|
| Metal oxygen | 3 | 3 | 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 |
| Aromatic ring | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
रँकिंग संचित साहित्य पुरावा प्रतिबिंबित करते, एकच अधिकृत नियम नाही. नेहमी तुमच्या नमुना संदर्भाविरुद्ध पुष्टी करा.
संभाव्य साहित्य
| सामग्री | सहाय्यक शिखरे | ओव्हरलॅपिंग गट | उद्धृत स्रोत |
|---|---|---|---|
| silver nanoparticles | 549, 1636, 1631 | Methacrylate, C-O single bond, Methoxy (OCH3) | 1 |
साहित्य केवळ तेव्हाच दर्शविले जातात जेव्हा समान साहित्य पूल या बँडला आणि किमान एक अतिरिक्त वैशिष्ट्यपूर्ण शिखराला समर्थन देतो.
स्पेक्ट्रम तर्क
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 549 cm⁻¹ is usually not enough for material identification by itself.
वास्तविक-जग वापर
या प्रकारचा प्रश्न पॉलिमर ओळख, अज्ञात प्लास्टिक स्क्रीनिंग, क्यूसी ट्रबलशूटिंग, रिसायकल केलेल्या सामग्रीची पडताळणी आणि साहित्य-समर्थित पीक असाइनमेंट पुनरावलोकनात सामान्य आहे.
सामान्य चुका
- कमीत कमी एक किंवा दोन सहाय्यक शिखरे तपासल्याशिवाय एका वेगळ्या बँडला सामग्रीचा पुरावा मानणे.
- ओव्हरलॅप दुर्लक्षित करणे: अनेक कार्यात्मक गट समान तरंगसंख्येजवळ योगदान देऊ शकतात.
- जेव्हा अॅडिटीव्हज, ब्लेंड्स, ऑक्सिडेशन किंवा दूषितता स्पेक्ट्रम विकृत करू शकतात तेव्हा वैधता वगळणे.
पडताळणी सल्ला
जेव्हा अस्पष्टता राहते, तेव्हा DSC, GC-MS किंवा TGA सह गृहीतक प्रमाणित करा, विशेषतः मिश्रण, खराब झालेले नमुने आणि भरलेले पॉलिमर यासाठी.
या नियुक्त्यांमागील साहित्य
-
Alkyl C-H आत्मविश्वास 1.0
“Cthe spectra at 3keV with an atomic percentage of 55.32 indicates the presence of band at wavenumber 549 Previous studies have also reported that the nanoparticle size Br functional group belongs to alkyl halides.”
Biofabrication of silver nanoparticles from aqueous leaf extract of Leucas aspera and their anticancer activity on human cervical cancer cells DOI: 10.1088/2043-6254/ab5103 -
आत्मविश्वास 1.0
“Text: 'vibration bands at around 549 and 1226 indicated the presence of double 5-ring in ZSM-5.'”
Synthesis of ZSM5 Zeolite Particles Using Triethanol Amine as StructureDirecting Agent DOI: 10.1111/j.1551-2916.2011.05006.x -
Metal oxygen आत्मविश्वास 1.0
“Cr O , nopeakof 2oranyotherstoichiometryofchromiumoxidewasfoundinthe CrO 2 3 investigation.TheRamanbandcentredat549cm-1isofA 1gmodesymmetry,whiletheshiftat304cm-1and 350cm-1areofE gsymmetry[16,17].”
Ogwu 等 - 2016 - Corrosion, ion release and Mott-Schottky probe of DOI: 10.1088/2053-1591/3/4/045401 -
Metal oxygen आत्मविश्वास 1.0
“437cm(cid:2)1and 598cm(cid:2)1 absorption bands at 549, are related to the vibrations of the metal-oxygen bond in octahedral and tetrahedral sites, respectively.”
Rasouli 等 - 2020 - Structural, magnetic, and microwave absorption pro DOI: 10.1080/08327823.2020.1714104 -
Aromatic ring आत्मविश्वास 1.0
“1A, 1E), both the 1,649 and and cm-1, cm-1, cm-1 1,516 1,496 (aromatic ring skeleton vibracm-1 absorption peaks appear simultaneously the 1,549 cm-1, cm-1 1,375 (C-H bending vibration), and tion), 1,472 in their spectra.”
Ch'ng 等 - 2016 - Vasorelaxation Study and Tri-Step Infrared Spectro DOI: 10.3831/KPI.2016.19.016 -
Acetate आत्मविश्वास 1.0
“Cells were cultured in T-75 conformational changes in both proteins and nucleic acids, as 80-90% flasks (Greiner, USA) and at confluence, they were C-O well as showed a higher band of carbohydrates in A549 sub-cultured in a 1:10 to 1:12 spl”
Guler 等 - 2019 - Characterization of CD133(+)CD44(+) human prostat DOI: 10.1039/c9an00093c -
आत्मविश्वास 1.0
“bond between Mg and O shows a peak at 549 cm-1 Int.”
Lopez-Rodriguez 等 - 2023 - Dyeing with Hydrotalcite Hybrid Nanoclays and Disp DOI: 10.3390/ijms24010808 -
Metal oxygen आत्मविश्वास 0.9
“Explicit assignment in text.”
Velayutham 和 Selvapandiyan - 2019 - Effect of yttrium ion on the properties of tri eth DOI: 10.1016/j.heliyon.2019.e02091
या बँडसह स्पेक्ट्रम आहे का?
तुमचे FTIR स्पेक्ट्रम अपलोड करा आणि सेकंदात पूर्ण व्याख्या अहवाल मिळवा — साहित्य संदर्भांसह शिखर नियुक्त्या, लायब्ररी मॅचेस, आणि आत्मविश्वास-रेट केलेली पुरावा साखळी.