What absorbs at 929 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 929 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.

可能性のある官能基アサイン

ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。

可能性のある材料

同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。

スペクトルロジック

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

実使用例

この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。

よくある間違い

• 少なくとも1～2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
• 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
• 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。

検証アドバイス

曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。

これらのアサインの根拠となる文献

• Acetate 信頼度 1.0

  “- 995 999 1003 C-O stretching of cornstarch 929 -”

  Jothi 等 - 2021 - Proton conducting polymer electrolyte based on cor DOI: 10.1007/s11581-020-03792-2
• 信頼度 1.0

  “cm-1 ~929 Phonon sideband spectrum confirms the phonon energy ~920 for these glasses Si-O-.”

  Development of Eu3+ doped Li2O-BaO-GdF3-SiO2 oxyfluoride glass for efficient energy transfer from Gd3+ to Eu3+ in red emission solid state device application DOI: 10.1016/j.jlumin.2018.07.009
• Acetate 信頼度 1.0

  “cm-1), cm-1), cm-1), (1450.65 C-N stretching (1394.53 amide III or C-N stretching (1235.67 CO-O-C cm-1), cm-1) symmetric stretching vibration (1073.59 stretching vibration of C-O groups ( 928.78 and”

  Encapsulation of olive leaf phenolics within electrosprayed whey protein nanoparticles; production and characterization DOI: 10.1016/j.foodhyd.2019.105572
• Alkyl C-H 信頼度 1.0

  “FTIR(KBr, 1772, 1720(imideIgroup)1507(stretchingoftrisubstitutedbenzenering), 1386 (imide II, CN stretching), 1209 (COC antisymmetric stretching), 929 (out-of-plane CH bending).”

  Corrosion Resistance of Mild Steel Coated with Phthalimide-Functionalized Polybenzoxazines DOI: 10.3390/coatings10111114
• 信頼度 1.0

  “cm-1 (C-N in-plane deformation), 1201 (Py ring vibration), 1097 (asymmetric S(=O) 2 cm-1 stretching vibration), 1049 (symmetric S(=O) stretching and Py ring C-H deformation 2 cm-1 cm-1 vibration), 967 (C-C out of plane ring deformation vibr”

  New conductive copolymer membranes via track-etched PC templates for biological media ultra-filtration DOI: 10.1016/j.nimb.2007.08.066
• Alkyl C-H 信頼度 1.0

  “1603 1595 1544 1544 1551 NH bend coupled with CN stretch Amide II - - 1453 1438 1446 CH2 bending (scissors) vibration wag of proline and glycine 1378 1386 1378 1378 1394 CH2 Amide III - - 1229 1229 1236 NH bend stretch coupled C-N stretch 1”

  Characterization of gelatin/chitosan ploymer films integrated with docosahexaenoic acids fabricated by different methods DOI: 10.1038/s41598-019-44807-x
• 信頼度 1.0

  “The peaks 1086 results from stretching amine, shows that no absorption peak was observed in 0.5, 1, and 4 h and five peaks at 929,773,849,715 1035 from C-N stretching”

  Gupta 等 - 2018 - Effective Antimicrobial Activity o Green ZnO Nano DOI: 10.3389/fmicb.2018.02030
• Alkyl C-H 信頼度 1.0

  “(cm-1) Frequency Band Assignment Species C-H 929 out-of-plane deformation 1018 Ring deformation 1081 Furfural 1156 =C-O-C= ring vibration 1279 1570 C=C stretches 1696 C=O aldehyde stretch 1671 C-O 1163 acid stretch vibration 1369 CH symmetr”

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