Alkene (C=C) — Puncak serapan FTIR dan tugasan
Ini ialah nombor gelombang FTIR ciri apabila Alkene (C=C) cenderung menyerap, yang dihimpunkan daripada literatur yang diterbitkan dan diperingkat berdasarkan bukti sokongan. Setiap penetapan boleh dijejaki kepada sumber (DOI) dan disahkan silang terhadap 320,000+ spektrum rujukan serta graf pengetahuan kami.
Disokong oleh 8 sumber yang dipetik
Jawapan pantas
Alkene (C=C) biasanya ditetapkan dengan mencari kelompok berulang puncak ciri dan bukan satu nombor tepat buku teks. Jadual di bawah menunjukkan di mana literatur paling kerap meletakkan kumpulan ini dalam FTIR, yang disusun mengikut bukti terkumpul.
Puncak FTIR ciri untuk Alkene (C=C)
| Nombor gelombang (cm⁻¹) | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| 1600 | 61 | 59 | 1.0 |
| 1640 | 39 | 37 | 1.0 |
| 1638 | 30 | 28 | 1.0 |
| 1650 | 29 | 27 | 1.0 |
| 1630 | 23 | 21 | 1.0 |
| 3010 | 22 | 20 | 1.0 |
| 1610 | 21 | 21 | 1.0 |
| 1635 | 21 | 20 | 1.0 |
| 1637 | 21 | 18 | 1.0 |
| 1500 | 20 | 19 | 1.0 |
| 1636 | 17 | 17 | 1.0 |
| 1608 | 16 | 15 | 1.0 |
| 1620 | 16 | 14 | 1.0 |
| 3008 | 15 | 14 | 1.0 |
| 1580 | 14 | 13 | 1.0 |
| 1625 | 13 | 13 | 1.0 |
| 1639 | 13 | 10 | 1.0 |
| 1560 | 12 | 12 | 1.0 |
| 3009 | 12 | 11 | 1.0 |
| 1700 | 12 | 11 | 1.0 |
| 1590 | 12 | 10 | 1.0 |
| 1634 | 11 | 11 | 1.0 |
| 1645 | 11 | 11 | 1.0 |
| 1514 | 11 | 10 | 1.0 |
| 1633 | 11 | 9 | 1.0 |
| 1655 | 10 | 10 | 1.0 |
| 1651 | 10 | 10 | 1.0 |
| 1450 | 10 | 10 | 1.0 |
| 1646 | 10 | 9 | 1.0 |
| 1618 | 10 | 9 | 1.0 |
Menunjukkan 30 puncak terbaik disokong daripada 801 jumlah untuk Alkene (C=C).
Logik spektrum
Tugasan kumpulan berfungsi menjadi lebih yakin apabila beberapa jalur yang dijangkakan muncul bersama. Gunakan halaman ini untuk mencari puncak yang paling disokong, kemudian sahkan bahawa sampel yang sama menunjukkan corak yang koheren dan bukannya satu hit terpencil.
Penggunaan dunia sebenar
Halaman-halaman ini berguna untuk analisis bahan yang tidak diketahui, penjelasan puncak dalam laporan, penyelesaian masalah polimer, dan mengesahkan sama ada keluarga bahan calon adalah boleh dipercayai secara kimia.
Kesilapan biasa
- Menggunakan satu halaman kumpulan berfungsi sebagai keputusan bahan lengkap tanpa memeriksa spektrum yang lain.
- Dengan menganggap jalur yang paling kuat sentiasa menjadi yang paling diagnostik.
- Melupakan bahawa pemprosesan, bahan tambahan, penuaan, dan campuran boleh mengalihkan atau melebarkan puncak yang dijangkakan.
Nasihat pengesahan
Gunakan DSC, GC-MS, atau TGA apabila beberapa keluarga bahan berkongsi jalur yang serupa atau apabila kesan campuran menyebabkan tugasan FTIR tidak pasti.
Literatur di sebalik penetapan ini
-
968 cm⁻¹ keyakinan 1.0
“and quantified by using Fourier-transform infrared (FTIR) spectroscopy, in the mid-region of 400-4000 cm-1, The FTIR analysis shows that two oil extracts (with and without heat) present a well-defined peak at 968 which represents the double”
Analysis of trans fatty acids production and squalene variation during amaranth oil extraction DOI: 10.2478/s11532-012-0104-4 -
1535 cm⁻¹ keyakinan 1.0
“As observed in the MWCNTs sample, a typical signal at 1535 shows the cm-1 C=C vibration of structural aromatic.”
Synthesis and Physical Properties Characterization of Montmorillonite-modified Carbon Nanotubes Filler DOI: 10.1088/1757-899X/546/4/042004 -
1643 cm⁻¹ keyakinan 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.”
Grafting of Oleic Acid On Cyclic Natural Rubber Resiprene-35 Using Dicumyl Peroxide Initiator and Divinylbenzene Compatibilizers For Paint Binder In Polyamide Thermoplastics DOI: 10.13005/ojc/350119 -
1645 cm⁻¹ keyakinan 1.0
“The small peak at 1645 is attributed to the stretching vibration of C=C [48], which becomes gradually stronger by increasing content of VMSG.”
Novel Silica Functionalized Monosodium Glutamate/PVA Cross-linked Membranes for Alkali Recovery by Diffusion Dialysis DOI: 10.21203/rs.3.rs-283846/v1 -
1634 cm⁻¹ keyakinan 1.0
“LLM confirmed rule peak-group candidate”
Modified Dioscorea hispida starch-based hydrogels and their in-vitro cytotoxicity study on small intestine cell line (FHS-74 Int) DOI: 10.1016/j.ijbiomac.2017.10.125 -
1634 cm⁻¹ keyakinan 1.0
“35 36 cm-1 The twin weak absorption bands at 1634 and 1613 are from C=C stretching vibration while the 37 cm-1 38 absorbances at 2847 and 2940 are attributed to the stretching vibration of aliphatic C-H groups.”
Electrosprayed PMMA microcapsules containing green soybean oil-based acrylated epoxy and a thiol: a novel resin for smart self-healing coatings DOI: 10.1088/1361-665X/ab9754 -
1578 cm⁻¹ keyakinan 1.0
“2 (bottom) cm-1, bands were located at 1578 that the highest signal-to-noise ratio was found for a resulting from the cm-1, nominal resolution of 4 C=C stretching in chloroalkenes, at 1541, 1394, 1273 which also provided the cm-1,”
Determination of iprodione in agrochemicals by infrared and Raman spectrometry DOI: 10.1007/s00216-007-1152-z -
3275 cm⁻¹ keyakinan 1.0
“The two prominent peaks at 3275.13 and 1635.54 are typical of N-H bond of amines and C=C stretch of alkenes or C=O stretch of amides [42] respectively.”
Biomedical Applications of Cocoa Bean Extract-Mediated Silver Nanoparticles as Antimicrobial, Larvicidal and Anticoagulant Agents DOI: 10.1007/s10876-016-1055-2
Lihat Alkene (C=C) dalam spektrum anda sendiri
Muat naik spektrum FTIR anda dan dapatkan laporan tafsiran penuh — tugasan puncak dengan petikan literatur, padanan perpustakaan, dan analisis berasaskan literatur — dalam beberapa saat.