What absorbs at 2349 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 2349 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.

가능한 작용기 할당

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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 2349 cm⁻¹ is usually not enough for material identification by itself.

실제 사용

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일반적인 실수

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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

• Alkyl C-H 신뢰도 1.0

  “proportion.19,30 the concentration in equal Consequently, all the (n (n cm(cid:2)1) cm(cid:2)1) band at 2349 and CH band at 3018 at a bulk 3 4 3 quantitative data will be expressed either in ''ppm m'' or in pressure of 1.2 bar.”

  Cailteau 等 - 2011 - In situ gas monitoring in clay rocks mathematical DOI: 10.1039/c0ay00622j
• Carbon dioxide 신뢰도 1.0

  “Inspection of the list of infrared and Raman active modes for gaseous CO (see Table 56 in Herzberg, 1956) shows that carbon dioxide 2 displays, besides a very strong v antisymmetric stretching at 3 cm-1, cm-1, 2349.3 two infrared active ban”

  FTIR microspectroscopy and SIMS study of water-poor cordierite from El Hoyazo, Spain: Application to mineral and melt devolatilization DOI: 10.1016/j.lithos.2009.05.031
• 신뢰도 1.0

  “The band at 2349 was due to O C O stretching concentration increases which may be due to a decrease in oxygen vacancy concentration [44].”

  Fabbiyola 等 - 2017 - Optical and magnetic properties of Ni-doped ZnO na DOI: 10.1016/j.jallcom.2016.10.022
• Carbon dioxide 신뢰도 1.0

  “The band at 2349 was due to O=C=O stretchof dye sensitised solar cells were done using Keithley source ing vibrations which confirms the existence of CO while meter (Model No.”

  Structural, optical and electrical properties of Ni doped ZnO nanostructures synthesized by solution combustion method DOI: 10.1007/s10854-017-8038-4
• Carbon dioxide 신뢰도 1.0

  “Moreover, the presence of 3 2 and 2349 cm-1 caused by the asymmetric stretch ν3 of the CO2 molecule [41].”

  Thermal and Plasma-Assisted CO2 Methanation over Ru/Zeolite: A Mechanistic Study Using In-Situ Operando FTIR DOI: 10.3390/catal13030481
• Carbon dioxide 신뢰도 1.0

  “Results were grouped based on the mass of Carbon dioxide Antisymmetric stretching 2349”

  Gordon 和 Sephton - 2016 - Organic Matter Detection on Mars by Pyrolysis-FTIR DOI: 10.1089/ast.2016.1485
• 신뢰도 1.0

  “Explicit assignment: 'peak located at 2349cm-1 corresponding to the anti-symmetric stretch in carbon dioxide'”

  Gordon 和 Sephton - 2018 - A Method for Choosing the Best Samples for Mars Sa DOI: 10.1089/ast.2017.1744
• Water (H2O) 신뢰도 1.0

  “For carbon dioxide and water the areas of cm-1 corresponding to the anti-symmetric characteristic peaks were recorded - one located at 2349 cm-1 arising from a stretching mode of water.”

  Gordon 和 Sephton - 2016 - Rapid habitability assessment of Mars samples by p DOI: 10.1016/j.pss.2015.11.019