What absorbs at 1686 cm⁻¹ in an FTIR spectrum?
A band near 1686 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
संभावित कार्यात्मक-समूह असाइनमेंट
| कार्यात्मक समूह | समर्थन तथ्य | उद्धृत स्रोत | शीर्ष विश्वास |
|---|---|---|---|
| N-O bond | 1 | 1 | 1.0 |
| Urea | 1 | 1 | 1.0 |
| Protein beta sheet | 1 | 1 | 1.0 |
| Protein beta turn | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Carbonyl (C=O) | 1 | 1 | 1.0 |
| Hydrogen bond | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
रैंकिंग संचित साहित्य साक्ष्य को दर्शाती है, एक एकल आधिकारिक नियम नहीं। हमेशा अपने नमूना संदर्भ के खिलाफ पुष्टि करें।
इन असाइनमेंट के पीछे का साहित्य
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Aromatic ring विश्वास 1.0
“cm-1 Bands at 1686 and 1528 were attributed to aromatic C═C groups.”
Salem 等 - 2019 - Synthesis of compounds having antimicrobial activi DOI: 10.1016/j.bioorg.2019.03.013 -
Alkyl C-H विश्वास 1.0
“]C�N+]C�C was assigned to the ring and the band at 1686cm-1 C�C was assigned to the aliphatic stretching, ˚ C2-C3�1.329 although it is not possible to discard a contribution of the A).”
Cordeiro 等 - 2019 - A Novel Zn-II Complex Bearing Two Monodentate (4-M DOI: 10.1155/2019/7876495 -
Hydrogen bond विश्वास 1.0
“For the fresh sample TPU-383(PBA/PCL)-0.3 containing a mixture of two polyols the crystallization rate of PCL at room temperature cannot stimulate phase separation which following bands are identified: low-intense peak of carbonyl stretchin”
The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol DOI: 10.3390/ma16020818 -
Carbonyl (C=O) विश्वास 1.0
“15N 15N-Gln-labeled They combined glutamine labeling of the ΔΔA The spectrum in BLUF domain is cm-1 AppA BLUF domain with a reconstitution of the protein with dominated by a positive band at 1696 accompanied by a 13C-labeled cm-1 uniform fl”
Spectroscopic and Computational Observation of Glutamine Tautomerization in the Blue Light Sensing Using Flavin Domain Photoreaction DOI: 10.1021/jacs.2c10621 -
Hydroxyl (O-H) विश्वास 1.0
“Although the minus ppR spectra possess a First, we examined the O-H signal of Thr204 in the M M 1686cm-1 minus ppR spectra (Figures 6(a) and 6(b)), the 1693 negative band at intermediate.”
Kandori 等 - 2010 - Protein-Protein Interaction Changes in an Archaeal DOI: 10.1155/2010/424760 -
Protein beta turn विश्वास 1.0
“The flour was noted after roasting, which was consistent with the results reported for dry RYSP20 sample revealed peaks centered at 1622, 1629, and 1693 cm-1 for β-sheet structure, ◦C ◦C gluten heated up to 85 [67] and for thermally treated”
Kotsiou 等 - 2021 - Impact of Roasted Yellow Split Pea Flour on Dough DOI: 10.3390/foods10081832 -
Protein beta sheet विश्वास 1.0
“β-sheet 1634 44.5 The three subpeaks are located at ~1634 cm-1, ~1665 cm-1, and ~1686 cm-1, respectively.”
Modulation Effects of Fe3+, Zn2+, and Cu2+ Ions on the Amyloid Fibrillation of -Synuclein: Insights from a FTIR Investigation DOI: 10.3390/molecules27238383 -
Urea विश्वास 1.0
“The vibrations at 1686 and 1658 cm-1 are assigned to hydrogen-bonded urea groups [76].”
Effects of Various Types of Expandable Graphite and Blackcurrant Pomace on the Properties of Viscoelastic Polyurethane Foams DOI: 10.3390/ma14071801
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