What absorbs at 685 cm⁻¹ in an FTIR spectrum?
A band near 685 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
ممکنہ فنکشنل گروپ تفویضات
| فنکشنل گروپ | معاون حقائق | حوالہ کردہ ذرائع | سب سے زیادہ اعتماد |
|---|---|---|---|
| Silicon-oxygen (Si-O) | 4 | 4 | 1.0 |
| Metal oxygen | 3 | 3 | 1.0 |
| Phosphate (PO4) | 2 | 2 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Ring structure | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Borate | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Urea | 1 | 1 | 1.0 |
| Phosphorus | 1 | 1 | 1.0 |
درجہ بندی جمع شدہ ادبی ثبوتوں کی عکاسی کرتی ہے، نہ کہ ایک واحد مستند اصول۔ ہمیشہ اپنے نمونے کے سیاق و سباق کے خلاف تصدیق کریں۔
ان تفویضات کے پیچھے ادب
-
اعتماد 1.0
“Similarly by GGA cm(cid:2)1 (i) The frequencies due to Si-O in-plane bending vibrations, method, the peak position is 685.2 in [P] and shifts to”
Theoretical and experimental study of structures and properties of cement paste The nanostructural aspects of C–S–H DOI: 10.1016/j.jpcs.2011.05.001 -
اعتماد 1.0
“[3] made a MgO 10.46% 15.88% comparison between the FTIR spectra of Mg-rich and Mg-poor K2O 0.71% 0.25% 3585cm-1 palygorskites, and concluded that the vibration was Na2O 0.02% 0.01% 685cm-1 Fe)(cid:2)OH Mg)(cid:2)OH, P2O5 0.04% 0.34% caused”
Cai 等 - 2007 - A Fourier transform infrared spectroscopic study o DOI: 10.1016/j.saa.2006.02.053 -
اعتماد 1.0
“(2006), similar bands observed at 685 and are attributed to the Fe-O”
do Nascimento-Dias 等 - 2020 - Detection of organic or inorganic material in Mart DOI: 10.1017/S147355042000021X -
Phosphate (PO4) اعتماد 1.0
“The two peaks at 611 and 685 cm-1 cm-1 692 caused by P-O bending in phosphate.”
Ashemary 等 - 2023 - Preparation and characterization of mesoporous Lan DOI: 10.15251/DJNB.2023.182.681 -
Urea اعتماد 1.0
“The wavenumber around 1,673-1,685 cm-1 corresponded to free hydrogen-bonded urea carbonyl.”
Che 等 - 2019 - Investigations on Aging Behavior and Mechanism of DOI: 10.3390/ma12213636 -
Phosphate (PO4) اعتماد 1.0
“The spectral bands associated with polyphosphates, namely P=O stretching (1165 cm-1) and P-O-P stretching (685 cm-1), were weak and Int.”
Assessment of Biotechnologically Important Filamentous Fungal Biomass by Fourier Transform Raman Spectroscopy DOI: 10.3390/ijms -
Borate اعتماد 1.0
“(cm-1) Frequencies Assignment Reference ~685 B-O-B bending vibration [29]”
Facile Synthesis of Calcium Borate Nanoparticles and the Annealing Effect on Their Structure and Size DOI: 10.3390/ijms131114434 -
Aromatic ring اعتماد 1.0
“The peak at cm-1 685 may be assigned due to the stretching vibration of aromatic ring that might be attached to the free O-H Gracilaria group.”
Kumar 等 - 2013 - Seaweed-mediated biosynthesis of silver nanopartic DOI: 10.1007/s13204-012-0151-3
کیا اس بینڈ کے ساتھ اسپیکٹرم ہے؟
اپنا FTIR اسپیکٹرم اپ لوڈ کریں اور سیکنڈوں میں مکمل تشریحی رپورٹ حاصل کریں — ادبی حوالوں کے ساتھ چوٹی کی تفویض، لائبریری میچز، اور اعتماد کی درجہ بندی کے ساتھ ثبوت کی زنجیر۔
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