What absorbs at 672 cm⁻¹ in an FTIR spectrum?
A band near 672 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 6 cited sources
Jibu la haraka
A band near 672 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 |
|---|---|---|---|
| Carbon dioxide | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
| Metal oxygen | 1 | 1 | 1.0 |
| Borate | 1 | 1 | 1.0 |
| Phosphate (PO4) | 1 | 1 | 1.0 |
| Siloxane (Si-O-Si) | 1 | 1 | 0.7 |
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 |
|---|---|---|---|
| calcite | 672, 2850, 2864 | Alkyl C-H | 1 |
| hydroxyapatite | 672, 1620, 1639 | 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 672 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
-
Phosphate (PO4) uaminifu 1.0
“The peak at 672 cm-1 belongs to symmetric P-O”
Novel synthesis of bioactive hydroxyapatite/f-multiwalled carbon nanotube composite coating on 316L SS implant for substantial corrosion resistance and antibacterial activity DOI: 10.1016/j.jallcom.2018.10.341 -
Borate uaminifu 1.0
“Especially, the Raman peak located at 672 is ascribed to the vibration of the B-O-P bond, which is the connector between the PO and BO tetrahedron.”
Zhang 等 - 2013 - Vibrational spectra and first principles calculati DOI: 10.7498/aps.62.037802 -
Metal oxygen uaminifu 1.0
“The cm-1 peak at 672 was ascribed to O-Sn-O stretching vibration of tin-oxide.”
A facile hydrothermal approach for catalytic and optical behavior of tin oxide- graphene (SnO2/G) nanocomposite DOI: 10.1371/journal.pone.0202694 -
Alkyl C-H uaminifu 1.0
“Additionally, the new peak at 672 represents the stretching vibration of H-C-H in SAF.”
Application of a Superplasticizer in Scheelite Selective Flotation from Calcite DOI: 10.3390/min12040483 -
Carbon dioxide uaminifu 1.0
“can observe the obvious strong absorption bands of CO 2 (2233-2420cm-1, 672cm-1),”
Zhao 等 - 2021 - Five Dinuclear Lanthanide Complexes Based on 2,4-d DOI: 10.3389/fchem.2021.726813 -
Siloxane (Si-O-Si) uaminifu 0.7
“FTIR transmittance bands at 672 cm-1 attributed to Si-O-Si stretching present in clay minerals”
Goonetilleke 等 - 2021 - Acid-assisted leaching of iron and manganese from DOI: 10.4038/jnsfsr.v49i2.10177
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.