What absorbs at 1643 cm⁻¹ in an FTIR spectrum?
A band near 1643 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
संभाव्य कार्यात्मक-गट नियुक्त्या
| कार्यात्मक गट | समर्थन करणारी तथ्ये | उद्धृत स्रोत | सर्वोच्च आत्मविश्वास |
|---|---|---|---|
| Carbonyl (C=O) | 5 | 5 | 0.9 |
| Hydroxyl (O-H) | 4 | 4 | 0.9 |
| Alkene (C=C) | 2 | 2 | 1.0 |
| N h | 1 | 1 | 0.9 |
| Water (H2O) | 1 | 1 | 0.9 |
| Amide | 1 | 1 | 0.8 |
| Protein | 1 | 1 | 0.8 |
रँकिंग संचित साहित्य पुरावा प्रतिबिंबित करते, एकच अधिकृत नियम नाही. नेहमी तुमच्या नमुना संदर्भाविरुद्ध पुष्टी करा.
या नियुक्त्यांमागील साहित्य
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Alkene (C=C) आत्मविश्वास 1.0
“cm-1 peak at 1705.1 means that there is a bond of cm-1 -C=O, and also absorption at 1643.4 and medium intensity which shows the presence of C=C.”
Aritonang 等 - 2019 - Grafting of Oleic Acid On Cyclic Natural Rubber Re DOI: 10.13005/ojc/350119 -
Carbonyl (C=O) आत्मविश्वास 0.9
“Text: 'vibrational band at 1643 (C=O stretching) attributed to communic acid'”
Garcia-Valles 等 - 2023 - Differentiation between copal and amber by their s DOI: 10.1007/s10973-023-12333-8 -
आत्मविश्वास 0.9
“Explicit assignment in text”
Jibrael 和 Mohammed - 2016 - Production of graphene powder by electrochemical e DOI: 10.1016/j.ijleo.2016.04.101 -
Water (H2O) आत्मविश्वास 0.9
“Bending vibration of H-O-H group.”
Ahmed 等 - 2023 - Immobilization Approach as a Creative Strategy to DOI: 10.3390/polym15071797 -
Carbonyl (C=O) आत्मविश्वास 0.9
“Small peak near 1643.22 cm-1 due to C=O stretching.”
Amin 等 - 2019 - Characterization and performance analysis of compo DOI: 10.1016/j.heliyon.2019.e02009 -
Carbonyl (C=O) आत्मविश्वास 0.9
“C=O stretching”
Araujo 等 - 2021 - Comparison of Different Methods for Spongin-like C DOI: 10.3390/membranes11070522 -
Alkene (C=C) आत्मविश्वास 0.9
“Explicit assignment in text: 'alkenes (-C=C-) at 1643'”
Armynah 等 - 2016 - Study of Chloride Ion Transport of Composite by Us DOI: 10.1063/1.4943752 -
Hydroxyl (O-H) आत्मविश्वास 0.9
“explicit assignment”
Barzic 等 - 2022 - Cellulose derivativebarium titanate composites wi DOI: 10.21203/rs.3.rs-467926/v1
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.
माझ्या स्पेक्ट्रमचे व्याख्या करा