What absorbs at 1263 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 1263 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 1263 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

• Alkyl C-H 신뢰도 1.0

  “The spectrum shows also two bands at 1263cm(cid:2)1, C-H C-O 1369 and owing to bending of cellulose and the stretching vibration 1040cm(cid:2)1”

  Alkali and epoxy-silane surface modified pine cone flour reinforced polypropylene/poly (lactic acid) DOI: 10.1080/01694243.2021.1952677
• C c single bond 신뢰도 1.0

  “The starch spectrum exhibited three characteristic scattering peaks at 1263, and941cm-1, 1053, whichareduetothestretchingofC-O,C-C,andC-OHbondsbelonging cm-1 to starch [37].”

  Preparation and Characterization of Super-Absorbing Gel Formulated from -Carrageenan–Potato Peel Starch Blended Polymers DOI: 10.3390/polym13244308
• Silicon carbon 신뢰도 1.0

  “LLM confirmed rule peak-group candidate”

  A forensic international market survey of condom lubricants and personal hygiene products using ATR-FTIR coupled to chemometrics DOI: 10.1016/j.scijus.2021.01.005
• Alkene (C=C) 신뢰도 1.0

  “The characteristic bands at 1508 cm-1 and 1263 cm-1 were determined to be C=C, C-O stretching or bending vibrations of the groups in lignin.”

  Cresnar 等 - 2021 - Insight into the Surface Properties of Wood Fiber- DOI: 10.3390/polym13101535
• Acetate 신뢰도 1.0

  “C=O stretching 1724 O-H Overlapping (def.) of C=C ring stretching 1585, 1442 C-O stretching due to phenol 1263 C-H C=C-H (def.) of (o.o.p.) from aromatic rings 800 Weak absorption indicating C-S stretching 730, 710, 678 reported melanins ar”

  Purification and characterisation of a sulphur rich melanin from edible mushroom Termitomyces albuminosus Heim DOI: 10.1080/21501203.2018.1494060
• Acetate 신뢰도 1.0

  “Additional lignin-related peaks are those at 1603 cm-1 for aromatic skeletal and C=O stretch vibrations, 1506 cm-1 for the C=C stretch of aromatic skeletal vibration and 1263 cm-1 for the G-ring plus C=O stretch [23].”

  Jambrekovic 等 - 2022 - Viscoelastic and Thermal Properties of Styrene Mod DOI: 10.3390/polym14040786
• Acetate 신뢰도 1.0

  “The peaks at 1263 cm-1 is the characteristic peak of CO-O-C, and the characteristic peak of C-O-C is at 1091 cm-1.”

  Surface Modification of Carbon Microspheres with Guanidine Phosphate and Its Application as a Flame Retardant in PET DOI: 10.3390/polym12081689
• Acetate 신뢰도 1.0

  “Nanoscale Research Letters Page 6 of 10 (2016) 11:152 cm-1 C-O are attributed to the stretching of 1263”

  Kolodynska 等 - 2016 - Development of New Effective Sorbents Based on Nan DOI: 10.1186/s11671-016-1371-3