What absorbs at 786 cm⁻¹ in an FTIR spectrum?
A band near 786 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
Gán nhóm chức có thể
| Nhóm chức | Sự kiện hỗ trợ | Nguồn tham khảo | Độ tin cậy cao nhất |
|---|---|---|---|
| Alkyl C-H | 3 | 3 | 1,0 |
| Silicon (Si) | 3 | 3 | 1,0 |
| Siloxane (Si-O-Si) | 3 | 3 | 1,0 |
| Silicon carbon | 2 | 2 | 1,0 |
| Metal oxygen | 2 | 2 | 1,0 |
| Silicon-oxygen (Si-O) | 2 | 2 | 1,0 |
| C c single bond | 1 | 1 | 1,0 |
| Hydroxyl (O-H) | 1 | 1 | 1,0 |
| Methoxy (OCH3) | 1 | 1 | 1,0 |
| Methacrylate | 1 | 1 | 1,0 |
| C-O single bond | 1 | 1 | 1,0 |
| Acetate | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 1,0 |
| Chlorine | 1 | 1 | 1,0 |
| N h | 1 | 1 | 1,0 |
| Aromatic ring | 1 | 1 | 1,0 |
Xếp hạng phản ánh bằng chứng tài liệu tích lũy, không phải một quy tắc duy nhất có thẩm quyền. Luôn xác nhận với ngữ cảnh mẫu của bạn.
Tài liệu tham khảo đằng sau các gán này
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Alkyl C-H độ tin cậy 1,0
“cm-1 The sharp absorption peak at 785.9 also represented the strong band corresponding to CH stretching of aromatic amine.”
Kumar 等 - 2017 - Photo-induced and phytomediated synthesis of silve DOI: 10.1016/j.jphotobiol.2017.04.022 -
độ tin cậy 1,0
“The cm-1 cm-1 major peak of parent MCM-41 were observed at 1234.3 and 1071.4 (asymmetric Si-O-Si cm-1 cm-1 stretching), 785.9 (symmetric Si-O-Si stretching) and 456.1 (Si-O-Si bending) also cm-1 available for all polymeric composites.”
Nurul 等 - 2012 - XRD, FTIR and C-13 CPMAS NMR Studies of Composite DOI: 10.4028/www.scientific.net/AMR.364.159 -
độ tin cậy 1,0
“Therefore, the peaks at 530, 786 cm-1 corresponds to the terminal oxygen symmetric stretching mode (vs.) of VLO and the bridge oxygen asymmetric and symmetric stretching modes [22].”
Saravanakumar 等 - 2018 - Role of NaOH concentration on synthesis and charac DOI: 10.1063/1.5047993 -
độ tin cậy 1,0
“The strong peak near 786 unleached IIP particles exhibited similar patterns, responded to C-Cl vibration in the IR spectra of both except for the peaks corresponding to yttrium.”
Zulfikar 等 - 2017 - Separation of Yttrium from Aqueous Solution Using DOI: 10.3103/S1067821217060189 -
độ tin cậy 1,0
“and the bands at 786.03 682.05 and 509.46 cm-1 represent Si-O Quartz, Si-O-Si bending, and Fe-O Fe 2O Si-O-Al stretch-”
Foliar Application of Nanoclay Promotes Potato (Solanum tuberosum L.) Growth and Induces Systemic Resistance against Potato Virus Y DOI: 10.3390/v14102151 -
Phosphate (PO4) độ tin cậy 1,0
“and a (P-O) symmetric stretching band is seen at 786 cm-1 band assigned to the C-O group (at 1287 for the ν”
Giraldo 和 Carlos Moreno-Pirajan - 2013 - Study on the Adsorption of Heavy Metal Ions from A DOI: 10.1039/b211124c -
Alkyl C-H độ tin cậy 1,0
“The peak at 786 represents the Siwas heated above its melting point, and absolute ethyl C stretching and CH rocking vibration [23].”
Analysis of silver nanoparticles produced by chemical reduction of silver salt solution DOI: 10.5755/j01.ms.23.1.13661 -
Silicon (Si) độ tin cậy 1,0
“The peaks at 786 and 1257 assigned to Si-CH groups decrease 3 58 cm-1, in intensity.”
Effects of 400 keV electrons flux on two space grade silicone rubbers DOI: 10.1016/j.matchemphys.2013.05.002
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