What absorbs at 884 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 884 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 884 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

• 信頼度 1.0

  “659.7 CO32(cid:2) u2 Out-of-plane bending vibration of 883.7 Strong u3 929.6 Very strong Si-O asymmetric stretching vibration of silicate SO42 u3 S-O stretching vibration of 1097 Small shoulder 1114.2”

  Theoretical and experimental study of structures and properties of cement paste The nanostructural aspects of C–S–H DOI: 10.1016/j.jpcs.2011.05.001
• Ring structure 信頼度 1.0

  “Fourier transform infra-red (FTIR) analysis cm-1 confirm 3:Ce3+ cm-1 The FTIR spectra of CaSiO phosphor was recorded in the range 400 - 4000 to the functional groups presentintheobtainedsamples,Fig.2.FTIRspectrashowstrongtransmittancepeaksa”

  Dhanu 等 - 2020 - Photoluminescence of mixed phase CaSiO3Ce3+ nanop DOI: 10.1016/j.ijleo.2020.165139
• Aromatic ring 信頼度 1.0

  “9 is attributed to 1,4-disubstitution of the aromatic ring inpolyaniline.However,therearethreepeaksat884(w),854 (w)cm-1 (m), and 800 on curve 1 in Fig.”

  Li 和 Mu - 2005 - The electrochemical activity of sulfonic acid ring DOI: 10.1016/j.synthmet.2004.12.015
• Carbonate 信頼度 1.0

  “Furthermore, a closer look atthe singlet band 2-1 at 861-864 is probably due to the n ACC.15,32,33 absorption band of carbonate groups from 2-3 singlet reveals a progressive peak shift from 884 (keel), n cm(cid:2)1 887 (needles), to 888 (pl”

  Long 等 - 2012 - From synthetic to biogenic Mg-containing calcites DOI: 10.1039/c2cp22453d
• 信頼度 1.0

  “The traces of the organic cm-1 materials from the PVP were at 1535 and 2787 and cm-1, are associated with Si-O stretching at 884, and 889 could be attributed to C-H bending vibrations [47, 48].”

  Alibe 等 - 2019 - Effects of polyvinylpyrrolidone on structural and DOI: 10.1007/s10973-018-7874-7
• Protein 信頼度 1.0

  “cm-1 Increase in absorption at ~884 due to alterations in phosphorylated proteins suggest that more extensive phosphorylation occurs in malignant compared to benign samples.”

  ATR-FTIR spectroscopy as adjunct method to the microscopic examination of hematoxylin and eosin-stained tissues in diagnosing lung cancer DOI: 10.1371/journal.pone.0233626
• 信頼度 1.0

  “ESI-MS molecular-ion peak 884.42, corresponding to H+ + 1H [Zn(L5) ].”

  Gusev 等 - 2020 - Synthesis, Photoluminescence and Electrical Study DOI: 10.3390/ma13245698
• 信頼度 1.0

  “The band at cm-1 δ corresponds to the sAl-O-H mode of boehmite 1,072 cm-1 and the bands at 884, 740, 621, and 479 are attributed Al-O to the bonds of boehmite (Li et al.”

  Liu 等 - 2012 - Dechlorinating transformation of propachlor throug DOI: 10.1007/s11368-012-0506-0)