What absorbs at 2866 cm⁻¹ in an FTIR spectrum?
A band near 2866 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
Jibu la haraka
A band near 2866 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Ugawaji unaowezekana wa vikundi vya kazi
| Kikundi cha kazi | Ukweli unaounga mkono | Vyanzo vilivyotajwa | Uaminifu wa juu |
|---|---|---|---|
| Alkyl C-H | 11 | 11 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| C c single bond | 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 |
| Hydrogen bond | 1 | 1 | 1.0 |
Cheo kinaonyesha ushahidi wa fasihi uliokusanywa, si sheria moja yenye mamlaka. Thibitisha kila mara dhidi ya mazingira ya sampuli yako.
Nyenzo zinazowezekana
| Nyenzo | Vilele vya usaidizi | Vikundi vinavyoingiliana | Vyanzo vilivyotajwa |
|---|---|---|---|
| PCL | 2866, 1751, 1724 | Alkyl C-H, Hydroxyl (O-H) | 2 |
| cellulose | 2866, 1735, 1650 | Alkyl C-H, Hydroxyl (O-H) | 1 |
| hemicellulose | 2866, 1730, 897 | Alkyl C-H, Hydroxyl (O-H) | 1 |
| polyurethane | 2866, 2270, 1700 | Alkyl C-H | 1 |
| graphene | 2866, 1720, 2097 | Hydroxyl (O-H) | 1 |
| GO | 2866, 1720, 1182 | Hydroxyl (O-H), Alkyl C-H | 1 |
Nyenzo zinaonyeshwa tu wakati mkusanyiko sawa wa fasihi unaunga mkono bendi hii na angalau kilele kimoja cha ziada cha sifa.
Mantiki ya wigo
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 2866 cm⁻¹ is usually not enough for material identification by itself.
Matumizi ya ulimwengu halisi
Aina hii ya swala ni ya kawaida katika utambuzi wa polima, uchunguzi wa plastiki isiyojulikana, utatuzi wa shida za QC, uthibitishaji wa nyenzo zilizosindikwa, na ukaguzi wa ugawaji wa kilele unaoungwa mkono na fasihi.
Makosa ya kawaida
- Kuchukua bendi moja iliyotengwa kama uthibitisho wa nyenzo bila kuangalia angalau kilele kimoja au viwili vya usaidizi.
- Kupuuza mwingiliano: vikundi vingi vya utendaji vinaweza kuchangia karibu na nambari ya wimbi sawa.
- Kuruka uthibitishaji wakati viongezi, mchanganyiko, uoksidishaji, au uchafuzi unaweza kupotosha wigo.
Ushauri wa uthibitishaji.
Wakati utata unabaki, thibitisha nadharia kwa kutumia DSC, GC-MS, au TGA, hasa kwa mchanganyiko, sampuli zilizoharibika, na polima zilizojazwa.
Fasihi nyuma ya ugawaji huu
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Alkyl C-H uaminifu 1.0
“cm-1 peaks at 2865.67 and 2918.4 corresponding to stretching vibration of C H bonds in the high frequency area together cm-1 with a sharp peak at 1465.95 corresponding to the bending vibration of C H groups of water molecules adsorbed cm-1”
Production of graphene powder by electrochemical exfoliation of graphite electrodes immersed in aqueous solution DOI: 10.1016/j.ijleo.2016.04.101 -
uaminifu 1.0
“Explicit assignment in text”
Lu 和 Mi - 2005 - Characterization of the interfacial interaction be DOI: 10.1021/ma0486896 -
Alkyl C-H uaminifu 1.0
“In addition, the presence of the C-H stretching at 2931 cm-1 and 2866 cm-1, C=O urethane linkage [33].”
Self-Healable Supramolecular Vanadium Pentoxide Reinforced Polydimethylsiloxane-Graft- Polyurethane Composites DOI: 10.3390/polym11010041 -
Acetate uaminifu 1.0
“cm-1 cm-1, C=O (symmetric), stretching at 1721 at 2866 cm-1, C-O-C stretching C-C and C-O stretching at 1721”
Preparation of electrospun polycaprolactone nanofiber mats loaded with microalgal extracts DOI: 10.1002/elsc.201900009 -
Alkyl C-H uaminifu 1.0
“cm-1 C-H asymmetric stretching), 2929 (methylene C-H peak near 122.1 (cid:3)C does not vary with the mass ratio of cm-1 asymmetric stretching), 2866 (methyl and methylene LOV and indicates the temperature of the eutectic reaction: cm-1 C-H”
Gorniak 等 - 2016 - Thermal, spectroscopic and dissolution studies of DOI: 10.1007/s10973-016-5279-z -
Alkyl C-H uaminifu 1.0
“cm-1 cm-1 cm-1 bands at 2945 (asym CH stretch), 2866 (sym CH stretch), 1730 (ester C = O 2 2 cm-1 stretch), and 1060-1150 (asym C-O-C stretch) [36].”
Adapalene-loaded poly(#_#x03B5;-caprolactone) microparticles: Physicochemical characterization and in vitro penetration by photoacoustic spectroscopy DOI: 10.1371/journal. -
Alkyl C-H uaminifu 1.0
“region arising from C-H stretching of aromatic 2866 and cm-1 compound.”
Antibacterial Potential of Bacterial Cellulose Impregnated with Green Synthesized Silver Nanoparticle Against S. aureus and P. aeruginosa DOI: 10.1007/s00284-023-03182-7 -
Alkyl C-H uaminifu 1.0
“The positive band at cm-1 cm-1 2993-2995 and the negative band at 2866 (C-H stretching region) demonstrated the difference between normal colon tissues and polyps in the contributions of various”
Ex Vivo Vibration Spectroscopic Analysis of Colorectal Polyps for the Early Diagnosis of Colorectal Carcinoma DOI: 10.3390/diagnostics11112048
Una wigo wenye bendi hii?
Pakia wigo wako wa FTIR na upate ripoti kamili ya tafsiri — ugawaji wa vilele na marejeleo ya fasihi, ulinganishaji wa maktaba, na mlolongo wa ushahidi wenye kiwango cha uaminifu — kwa sekunde.