What absorbs at 3450 cm⁻¹ in an FTIR spectrum?
A band near 3450 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
Ugawaji unaowezekana wa vikundi vya kazi
| Kikundi cha kazi | Ukweli unaounga mkono | Vyanzo vilivyotajwa | Uaminifu wa juu |
|---|---|---|---|
| Hydroxyl (O-H) | 91 | 84 | 1.0 |
| Water (H2O) | 15 | 15 | 1.0 |
| N h | 11 | 10 | 1.0 |
| Alkyl C-H | 6 | 6 | 1.0 |
| Hydrogen bond | 6 | 5 | 1.0 |
| Silanol (Si-OH) | 6 | 5 | 1.0 |
| Amide | 5 | 4 | 1.0 |
| Carboxyl (COOH) | 3 | 3 | 1.0 |
| Carbonyl (C=O) | 3 | 3 | 1.0 |
| Metal oxygen | 3 | 2 | 1.0 |
| Methoxy (OCH3) | 2 | 2 | 1.0 |
| C-O single bond | 2 | 2 | 1.0 |
| Methacrylate | 2 | 2 | 1.0 |
| Ketone | 2 | 2 | 1.0 |
| Ester | 2 | 2 | 1.0 |
| Acetate | 2 | 2 | 1.0 |
| Carbohydrate | 2 | 2 | 1.0 |
| Phenolic | 2 | 2 | 0.8 |
| Secondary amine | 2 | 1 | 1.0 |
| Silicate | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Aromatic ring | 1 | 1 | 1.0 |
| Metal hydroxyl | 1 | 1 | 1.0 |
| Silicon (Si) | 1 | 1 | 1.0 |
| Amine primary | 1 | 1 | 0.8 |
Cheo kinaonyesha ushahidi wa fasihi uliokusanywa, si sheria moja yenye mamlaka. Thibitisha kila mara dhidi ya mazingira ya sampuli yako.
Fasihi nyuma ya ugawaji huu
-
Hydroxyl (O-H) uaminifu 1.0
“LLM confirmed rule peak-group candidate”
Synthesis of nickel oxide nanoparticles using pulsed laser ablation in liquids and their optical characterization DOI: 10.1016/j.apsusc.2012.03.147 -
Hydroxyl (O-H) uaminifu 1.0
“around 3400 1641 and 1092 Generally, in the FTIR spectra of silica, the USC cm-1 cm-1 absorption band around 3450 and 3400 are assigned to the stretching vibration of H-O-H and surface silanol group (Si-OH), respectively [19-20].”
Structural and optical investigations of Nd3+doped Y2O3-SiO2 nanopowder DOI: 10.1016/j.jallcom.2017.09.269 -
Hydroxyl (O-H) uaminifu 1.0
“cm(cid:1)1 (CONH-), (cid:4)1116 veried (O-H) a June meanwhile, peak at defects created in the crystal structure by incorporation of under cm(cid:1)1 different stretching.49 ions.58 metal The band at 3450 showed anti-symmetric 07 O-H bonds.”
Novel Ta/chitosan-doped CuO nanorods for catalytic purification of industrial wastewater and antimicrobial applications DOI: 10.1039/d2ra03006c -
Hydrogen bond uaminifu 1.0
“EPTE N5-H11 signals correspondence to hydrogen bonding are more intense than others in which cm-1, symmetric and asymmetric stretching modes shows absorption band at 3450 and 3702 respectively.”
Karimzadeh 等 - 2018 - FT-IR study and solvent-implicit and explicit effe DOI: 10.1016/j.saa.2018.03.009 -
Hydroxyl (O-H) uaminifu 1.0
“The broad peak at 3450 has been attributed to surface OH group vibrations.”
Kuthirummal 等 - 2016 - Synthesis and characterization of Ar-annealed zinc DOI: 10.1063/1.4964316 -
Hydroxyl (O-H) uaminifu 1.0
“(c c Wavenumber ) 3450 - -OH 1, 2) 3752 3752 -OH Stretching Fig.”
Synthesis characterization and luminescence studies of 100MeV Si8+ ion irradiated sol gel derived nanocrystalline Y2O3 DOI: 10.1016/j.nimb.2014.02.128 -
Hydroxyl (O-H) uaminifu 1.0
“Three OH bands cm-1 above 3450 are detected for both the natural and synthetic samples with negative temperature dependence, due to neighboring H-H repulsion in the crystal structure.”
In-situ high-temperature vibrational spectra for synthetic and natural clinohumite: Implications for dense hydrous magnesium silicates in subduction zones DOI: 10.2138/am-2019-6604 -
Hydroxyl (O-H) uaminifu 1.0
“ECS Journal of Solid State Science and Technology, 6 (7) R88-R95 (2017) R91 cm-1 cm-1 The absorption band at 3450 and 1630 can be attributed bond.51 to the symmetric stretching and bending vibration of H-O-H Theabsorptionbandobtainedat1386c”
Mondal 和 Manam - 2017 - Structural and Luminescent Properties of Si4+ Co-D DOI: 10.1149/2.0021708jss
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.
Tafsiri wigo wangu