What absorbs at 1753 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 1753 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.

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가능한 재료

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스펙트럼 로직

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 1753 cm⁻¹ is usually not enough for material identification by itself.

실제 사용

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검증 조언

모호성이 남아 있는 경우, 특히 혼합물, 분해된 시료 및 충전 폴리머의 경우 DSC, GC-MS 또는 TGA로 가설을 검증하십시오.

이 할당의 배경이 되는 문헌

• 신뢰도 1.0

  “cm-1 cm-1, cocrystal compared with the corresponding peaks of 5-FU at 3220.24 and 1662 There was a shift of the amino and carbonyl peaks to 3311 cm-1 and 1753 cm-1 in this cm-1.”

  Synthesis, Characterization, Theoretical and Experimental Anticancer Evaluation of Novel Cocrystals of 5-Fluorouracil and Schiff Bases against SW480 Colorectal Carcinoma DOI: 10.3390/pharmaceutics15071929
• N h 신뢰도 1.0

  “The first is a symmetrical peak/ cm-1 cm-1 (1753/1742 if the dark minus from polypeptide CN stretching and NH bending modes, trough at 1752/1740 CdC dark spectrum is subtracted) that is similar to the feature aromatic amino acids, and heme”

  Rich 和 Breton - 2001 - FTIR studies of the CO and cyanide adducts of full DOI: 10.1021/bi0027332
• Hydrogen bond 신뢰도 1.0

  “This indicates that the M formation ac7b) In the case of we observed a positive R-helix cm-1 cm-1 companies a weakened hydrogen bond of the in band at 1753 in H 2O, which shifts to 1742 in”

  Suzuki 等 - 2008 - Structural Changes of Salinibacter Sensory Rhodops DOI: 10.1021/bi801358b
• 신뢰도 1.0

  “The other peaks are observed at 1753, 1550, 1150, cm-1 cm-1 1389, 1050, 750, 650, and 500 due to Al-I linkage.”

  The Effect of AlI3 Nanoadditive on the Thermal Behavior of PMMA Subjected to Thermoanalytical Py-GC-MS Technique DOI: 10.3390/ma14227036
• Acetate 신뢰도 1.0

  “the formic acid that appears cm-1 at 1753 exhibits very weak C=O stretching vibrations [30,41].”

  The Activity of Ultrafine Cu Clusters Encapsulated in Nano-Zeolite for Selective Hydrogenation of CO2 to Methanol DOI: 10.3390/catal12111296
• Amide 신뢰도 1.0

  “and 1164 displaying C-N stretching The FTIR ester groups at the wave numbers of 1753 cm-1, respectively.”

  Gunawan 等 - 2018 - Optimization of Alkyldiethanolamides Synthesis fro DOI: 10.5650/jos.ess18042
• Carboxyl (COOH) 신뢰도 1.0

  “P 20L 5DA macromonomer also show the same diad absorptions at similar wavenumbers, but the P 20L 2.5DA macromonomer contains only short lactate cm-1, sequences, and reveals just one lactate absorption peak centred at 1753 in cm-1.”

  Wang 等 - 2013 - FT-IR Characterization and Hydrolysis of PLA-PEG-P DOI: 10.1002/pola.26930
• Acetate 신뢰도 1.0

  “FTIR Spectroscopy For A LPEI, the most significant changes appearing with metal sorption are identified in the regions (Figure 8, Tables S7 and S8): cm-1-the ~1753 C=O stretching band disappears after La (III) and Tb (III) sorption;”

  Synthesis of a New Phosphonate-Based Sorbent and Characterization of Its Interactions with Lanthanum (III) and Terbium (III) DOI: 10.3390/polym13091513