What absorbs at 1193 cm⁻¹ in an FTIR spectrum?

Hiter odgovor

A band near 1193 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.

Možne dodelitve funkcionalnih skupin

Razvrstitev odraža zbrane literaturne dokaze, ne enega avtoritativnega pravila. Vedno preverite glede na kontekst vašega vzorca.

Možni materiali

Materiali so prikazani le, ko ista literaturna podlaga podpira ta pas in vsaj en dodatni karakteristični vrh.

Logika spektra

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 1193 cm⁻¹ is usually not enough for material identification by itself.

Uporaba v resničnem svetu

Ta vrsta poizvedbe je pogosta pri identifikaciji polimerov, pregledovanju neznanih plastičnih mas, odpravljanju težav pri QC, preverjanju recikliranih materialov in literaturno podprtem pregledu dodelitev vrhov.

Pogoste napake

• Obravnavanje enega izoliranega pasu kot dokaza o materialu brez preverjanja vsaj enega ali dveh podpornih vrhov.
• Ignoriranje prekrivanja: več funkcionalnih skupin lahko prispeva blizu istega valovnega števila.
• Izpuščanje validacije, ko lahko dodatki, mešanice, oksidacija ali kontaminacija popačijo spekter.

Nasvet za preverjanje

Ko ostaja dvoumnost, potrdite hipotezo z DSC, GC-MS ali TGA, zlasti za mešanice, degradirane vzorce in polnjene polimere.

Literatura za temi dodelitvami

• Acetate zaupanje 1,0

  “graph of polyurethane prepolymer were allocated cm-1 1193 assigned to -C-O, -C-C stretching.”

  Salem 和 Salama - 2020 - Developing a New Class of UV-curable Polyurethane DOI: 10.21608/ejchem.2019.14853.1906
• Phosphate (PO4) zaupanje 1,0

  “Moreover, the significant peak at 1193 cm-1 (medium) was assigned to the vibration of P=O bonds in the phosphate moieties.”

  Hung Kim Nguyen 等 - 2020 - Preparation of a Novel Flame Retardant Formulation DOI: 10.3390/ma13010054
• Acetate zaupanje 1,0

  “At 1193 the =C-O-C= stretch was detected.”

  Solubility Temperature Dependence of Bio-Based Levulinic Acid, Furfural, and Hydroxymethylfurfural in Water, Nonpolar, Polar Aprotic and Protic Solvents DOI: 10.3390/pr9060924
• zaupanje 1,0

  “As can be seen in Figure cm-1 after salicylaldoxime treatment, the N-Cu and O-Cu stretch vibrations are found at 1193 and 1152”

  Comparison of Adsorption of Phenol O-O and N-O Chelating Collectors at the Malachite/Water Interface in Flotation DOI: 10.3390/min7020020
• Acetate zaupanje 1,0

  “Charging 1296 C-O asymmetric stretching vibration in adsorbed or solvated DEC C-O asymmetric stretching vibration in adsorbed 1193 or solvated EC C-O symmetric stretching vibration in adsorbed 1084”

  Matsui 等 - 2015 - In-operando FTIR Spectroscopy for Composite Electr DOI: 10.5796/electrochemistry.83.874
• Acetate zaupanje 1,0

  “cm-1 4f and Pb 4f 5/2, respectively, and previous studies have reported that the typical binding energy of Moreover, the FTIR spectra of obtained MPS are shown in Figure 9, where the peak at 1718 7/2 cm-1 C=O corresponds to the adsorption o”

  Zhou 等 - 2019 - Scalable Fabrication of Metallopolymeric Superstru DOI: 10.3390/nano9071001