What absorbs at 688 cm⁻¹ in an FTIR spectrum?
A band near 688 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 688 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 | 2 | 1.0 |
| Aromatic ring | 2 | 2 | 1.0 |
| Borate | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 0 | 1.0 |
| Metal hydroxyl | 1 | 0 | 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 |
|---|---|---|---|
| ZnO | 688, 1400, 3430 | Metal oxygen | 1 |
| kaolinite | 688, 3696, 693 | Metal oxygen | 1 |
| nanocomposites | 688, 1717, 1630 | Ring structure | 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 688 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
-
आत्मविश्वास 1.0
“The peak cm-1 at 602 can be attributed to terminal oxygen vibration cm-1 of Sn-OH, while the peak appearing at 688 is due to (F1).”
Synthesis, structural and optical properties of Fe-doped nanocrystalline SnO2 DOI: 10.1007/s10854-017-7018-z -
आत्मविश्वास 1.0
“In addition to the Ni-O Characterization above bands, the characteristic absorption band of obcm-1 served at 688 corresponds to the stretching vibrations of Ni-O.ItwasobservedthatwiththeadditionofNiOinPMOTFourier transform infrared (FTIR) s”
Sehgal 和 Narula - 2015 - Structural, morphological, optical, and electrical DOI: 10.1007/s00396-015-3663-z -
आत्मविश्वास 1.0
“reveals the characteristic vibrational bands at 557, 688, 717, 881, 935 and 1039 The cm-1 vibrational modes at 557 and 717 are assigned to the structural vibrations of yttrium-oxygen cm-1 (Y-O) bonds, the peak at 688 to the stretching mode”
Luminescence and electron spin resonance studies of narrow-band UVB emitting Gd3+ doped Y2SiO5 nanophosphors synthesized by sol-gel method DOI: 10.1016/j.ijleo.2021.167228 -
Silicon (Si) आत्मविश्वास 1.0
“cm-1 Three medium bands appeared at 688, 752 and 795 were assigned to the deformation modes of AlVI-O-Si bands [21-22].”
Souissi 等 - 2022 - Synthesis, Thermal Properties and Electrical Condu DOI: 10.21203/rs.3.rs-1294285/v1 -
Amide आत्मविश्वास 1.0
“582cm-1 The peaks at 688 and 900 and have been previously assigned to the α-form of various b nylons16-20 as the amide V and VI, respectively.”
[gamma]-Crystalline form of nylon-10,10 in nylon-10,10-montmorillonite nanocomposite DOI: 10.1002/pi.1154 -
Aromatic ring आत्मविश्वास 1.0
“Meanwhile, C=C of aromatic ring vibrations were observed at 687.5 the presence of these peak intensities is attributed to pure cinnamaldehyde (Figure 6 (b;”
Alamier 等 - 2022 - Thermodynamic and Spectroscopic Studies of SDS in DOI: 10.3390/app122312020 -
Borate आत्मविश्वास 1.0
“The absorption peaks at 687.62, 953.71 and 1345.78 attribute to borate network according to Table 3.”
Facile Synthesis of Calcium Borate Nanoparticles and the Annealing Effect on Their Structure and Size DOI: 10.3390/ijms131114434 -
Metal oxygen आत्मविश्वास 1.0
“1554 - 1427 Zn-O stretching 688 450”
Fadillah 等 - 2017 - Fabrication and Characterization of ZnO and Li dop DOI: 10.1063/1.4991157
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.