FTIR.fun FTIR.fun Làm cho phân tích FTIR dễ dàng hơn
TRANG KẾT QUẢ

aromatic / amide

Xem báo cáo ở trên. Sử dụng các bình luận bên dưới nếu cần thảo luận thêm.

Số kết quả: 20251117101032480542760 Chủ sở hữu: publicuser Bình luận: 0
  • Translating report into Tiếng Việt. English is shown for now.
FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20251117101032480542760 Date: Reported by: FTIR.fun Contact: [email protected]

Download a professional, formatted PDF of this analysis.

Top15

Similarity-ranked Top-15 library comparison

Library spectrum will appear here.
Library spectrum Interactive sample curve Move the pointer to show the vertical guide line.
Top 15 candidates

Reference library candidates

Rank Match % Compound Name Formula / SMILES Library preview Action
Reference candidates load with this Top-15 workbench.

Based on the library matches and evidence above.

Conclusion

aromatic / amide

General assessment
Độ tin cậy LLM
#42679 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. The library top‑15 consensus repeatedly highlights aromatic and amide functional groups, which agrees with the assigned ring and carbonyl bands.
  2. Direct‑literature sources attribute the 2851/2919 cm⁻¹ region to alkyl C‑H in numerous organic matrices, and the 1742 cm⁻¹ band to carbonyl stretching in esters and amides [1][2].
  3. A cited report explicitly assigns the 3276 cm⁻¹ band to amide N‑H stretching in polymeric amide systems, providing independent support for the amide direction [3].
Main limitation

The absence of a strong, sharp C≡N or C≡C band argues against a nitrile or alkyne‑rich structure, though such absence does not conflict with the aromatic/amide hypothesis.

Evidence & interpretation
Evidence

Key evidence

Kết quả khớp hàng đầu từ thư viện
4-aminophenol #42679 | match 0.0%
Hướng vật liệu
aromatic / amide The sample spectrum is dominated by features of an aromatic organic compound that also contains amide and/or hydroxyl groups. Strong aliphatic C‑H stretching, a prominent carbonyl band, and a pair of aromatic ring modes indicate a substituted aromatic skeleton bearing carbonyl and N‑H/O‑H functionalities. The reference library comparison points to 4‑aminophenol but with low confidence, and the overall evidence best supports an aromatic amide or aminophenol‑type material, without a definitive single identity.
Supporting peaks
705 cm-1 749 cm-1 822 cm-1 919 cm-1 969 cm-1 1010 cm-1 1091 cm-1 1120 cm-1
Supporting groups
methyl aromatic c_o_single_bond oxygen ring_6m ring o_h_stretch n_h_stretch
Support

Evidence supporting the conclusion

Only sample-relevant statements that support the present conclusion are shown here.

  1. The sample spectrum is dominated by features of an aromatic organic compound that also contains amide and/or hydroxyl groups. Strong aliphatic C‑H stretching, a prominent carbonyl band, and a pair of aromatic ring modes indicate a substituted aromatic skeleton bearing carbonyl and N‑H/O‑H functionalities. The reference library comparison points to 4‑aminophenol but with low confidence, and the overall evidence best supports an aromatic amide or aminophenol‑type material, without a definitive single identity.
  2. The library top‑15 consensus repeatedly highlights aromatic and amide functional groups, which agrees with the assigned ring and carbonyl bands.
  3. Direct‑literature sources attribute the 2851/2919 cm⁻¹ region to alkyl C‑H in numerous organic matrices, and the 1742 cm⁻¹ band to carbonyl stretching in esters and amides [1][2].
  4. A cited report explicitly assigns the 3276 cm⁻¹ band to amide N‑H stretching in polymeric amide systems, providing independent support for the amide direction [3].
  5. The intense bands at 2851 cm⁻¹ and 2919 cm⁻¹ are consistent with symmetric and asymmetric alkyl C‑H stretching, suggesting aliphatic hydrocarbon segments [1].
  6. A sharp carbonyl absorption at 1742 cm⁻¹ is attributable to C=O stretching, which may arise from ester or amide carbonyl groups [2].
  7. The pair of bands at 1509 cm⁻¹ and 1614 cm⁻¹ is assigned to aromatic C=C skeletal vibrations, confirming the presence of a substituted aromatic ring [2].
  8. Broad absorptions centered near 3276 cm⁻¹ and 3337 cm⁻¹ fall in the region typical of N‑H and O‑H stretching, and are assigned to amide and/or phenol/hydroxyl groups [3].
  9. Major peak assignments include 822: Direct reference: alkyl c h; c o single bond | Quality: The spectrum edges look truncated or baseline-shifted; 749: Direct reference: alkyl c h; c o single bond | Quality: The spectrum edges look truncated or baseline-shifted; 1091: Related literature: C-O stretching (alcohol/phenol/ester/ether) | Direct reference: alkyl c h; c o single bond | Quality: The spectrum edges look truncated or baseline-shifted; 969: Direct reference: alkyl c h; c o single bond | Quality: The spectrum edges look truncated or baseline-shifted.
Limitations

Evidence that limits the conclusion

  • The absence of a strong, sharp C≡N or C≡C band argues against a nitrile or alkyne‑rich structure, though such absence does not conflict with the aromatic/amide hypothesis.
  • No firm evidence of a primary amine –NH₂ scissoring mode is observed around 1600–1650 cm⁻¹, which would be expected if the material were a simple aminophenol; the 1509 cm⁻¹ band is instead assigned to aromatic ring vibration.
  • The broad 3276/3337 cm‑¹ region could originate from both N‑H and O‑H stretching, and the relative contributions cannot be determined from FTIR alone.
  • The carbonyl band at 1742 cm⁻¹ is shifted to a position more typical of ester than amide I; if the compound is purely amide, this shift raises uncertainty.
  • The library match to 4‑aminophenol is very weak (similarity ≈ 0.0), so the exact identity remains unresolved; the spectrum is compatible with a range of aromatic amides or aminophenols.
Recommendation

Suggested next verification

  • Acquire an NMR spectrum (¹H and ¹³C) to confirm the aromatic substitution pattern and distinguish between amide and ester carbonyls.
  • Perform an elemental or mass spectrometric analysis to determine the heteroatom content (N, O) and verify the presence of nitrogen.
  • If the sample is suspected to be an aminophenol, a simple wet‑chemical test for primary amine (e.g., ninhydrin) could help narrow the structural possibilities.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 822 1.00 - - - -
2 · 749 0.94 - - - -
3 · 1091 0.93 - - - -
4 · 969 0.87 - - - -
5 · 1470 0.84 - - - -
6 ★ 1509 0.84 Gán hỗ trợ bởi tài liệu Dải tại 1509 cm-1 được gán cho Aromatic C=C stretching[S4][S6]. [S4], [S6] Độ tin cậy LLM
7 · 1212 0.80 - - - -
8 · 1236 0.77 - - - -
9 · 1168 0.74 - - - -
10 · 705 0.73 - - - -
11 · 1010 0.73 - - - -
12 · 1255 0.70 - - - -
13 · 1120 0.70 - - - -
14 · 919 0.67 - - - -
15 · 1382 0.59 - - - -
16 ★ 2919 0.55 Gán hỗ trợ bởi tài liệu Dải tại 2919 cm-1 được gán cho C-H alkane stretching[S6]. [S6] Độ tin cậy LLM
17 ★ 1614 0.52 Gán hỗ trợ bởi tài liệu Dải tại 1614 cm-1 được gán cho Aromatic C=C stretching[S4][S6]. [S4], [S6] Độ tin cậy LLM
18 ★ 2851 0.45 Gán hỗ trợ bởi tài liệu Dải tại 2851 cm-1 được gán cho C-H alkane stretching[S6]. [S6] Độ tin cậy LLM
19 · 2590 0.45 - - - -
20 ★ 3276 0.42 Gán hỗ trợ bởi tài liệu Dải tại 3276 cm-1 được gán cho amide[RC3180]. [RC3180] Độ tin cậy tổng thể
21 ★ 3337 0.39 Gán hỗ trợ bởi tài liệu Dải tại 3337 cm-1 được gán cho O-H/N-H stretching[S6]. [S6] Độ tin cậy tổng thể
22 · 1282 0.33 - - - -
23 · 2324 0.33 - - - -
24 · 1548 0.27 - - - -
25 · 2050 0.23 - - - -
26 ★ 1742 0.23 Gán hỗ trợ bởi tài liệu Dải tại 1742 cm-1 được gán cho Carbonyl C=O stretch[S4][S6]. [S4], [S6] Độ tin cậy LLM
27 · 1979 0.22 - - - -
28 · 2166 0.21 - - - -
29 · 1864 0.21 - - - -
30 · 2113 0.20 - - - -
Literature

References

1751 local KG peak-level literature source(s) kept in the candidate pool; peaks 705, 749, 822, 919, 969, 1010; groups (si,_al)_o_(si,_al), 1,3_substituted_compound, 13c_label, 3,6_anhydrogalactose.

No. Title Page
[1] Gregorio 等 - 2017 - Analysis of human bodily fluids on superabsorbent -
[2] Zewdie 等 - 2022 - Flat sheet metakaolin ceramic membrane for water d -
[3] Wang 等 - 2016 - Effects of aging on the structural, mechanical, an -
[4] Tasci 等 - 2016 - Determination of alliin and allicin in the plant o -
[5] Paul 等 - 2012 - Immobilised anatase on clay mineral particles as a -
[6] Pandey 等 - 2016 - Impact of post deposition annealing in O-2 ambient -
[7] Fernandes 等 - 2018 - Membranes of polysulfoneclay influence of differ -
[8] Chaparro 等 - 2023 - Biowaxes from Palm Oil as Promising Candidates for -
[9] Castorina 等 - 2023 - Evidence for Mild Diagenesis in Archaeological Hum -
[10] Cao 等 - 2019 - Bio-Based Coating Materials Derived from Acetoacet -
[11] Azam 等 - 2012 - Effect of Mn doping on the structural and optical -
[12] pdf20231221 cm-1 infrared 第一部分/duband 等 - 2012 - laryngeal teflonoma identified by fourier-transfor.pdf -
[13] Zhang 等 - 2022 - Morphological Features and Spectral Comparisons of -
[14] Zhang 和 Zhou - 2022 - Industrial lignins the potential for efficient re -
[15] Qin 等 - 2022 - Application of SiON Coatings in Sandstone Artifact -
[16] Muvhiiwa 等 - 2019 - Study of biochar from pyrolysis and gasification o -
[17] Meade 等 - 2007 - Growth substrate induced functional changes elucid -
[18] Liu 等 - 2016 - Thermal degradation properties of biobased iron al -
[19] Chen 等 - 2018 - Study on Thermal Decomposition Behaviors of Terpol -
[20] Belhadj 等 - 2017 - Mechanisms of Simultaneous Hydrogen Production and -
[21] Bawazeer 等 - 2021 - Green synthesis of silver nanoparticles using Trop -
[22] Baldauf 等 - 2007 - Effect of selective growth media on the differenti -
[23] Baij 等 - 2018 - Time-Dependent ATR-FTIR Spectroscopic Studies on F -
[24] Azadeh 等 - 2022 - Development of Water Repellent, Non-Friable Tannin -
[25] Asghar 等 - 2011 - Comparative Solid Phase Photocatalytic Degradation -
[26] AlDayyat 等 - 2021 - Pyrolysis of Solid Waste for Bio-Oil and Char Prod -
[27] Ahmed 等 - 2023 - Design and Characterization of Baricitinib Incorpo -
[28] pdf20231221 cm-1 infrared 第一部分/kuriyama 等 - 2007 - promoting mechanism of potassium in preferential c.pdf -
[29] Pei 等 - 2017 - Fabrication of Hypericin Imprinted Polymer Nanosph -
[S4] Mikolaszek 等 - 2022 - Microscopic and Spectroscopic Imaging and Thermal 9
[S6] Varol 和 Mutlu - 2023 - TGA-FTIR Analysis of Biomass Samples Based on the 7
[RC3180] Sharma 等 - 2009 - One-Dimensional Gold Nanoparticle Arrays by Electr 2
Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction method: Asymmetric Least Squares Smoothing

The wavelength range for analysis(cm-1): N/A

Raw spectrum without baseline correction or other processing:

Sample spectrum image
Thảo luận

Bình luận và bằng chứng tiếp theo

Sử dụng khu vực này để tiếp tục giải thích, đặt câu hỏi hoặc thêm bằng chứng xác minh bổ sung.

  • Trang 1 của 1
Trả lời
CHỦ ĐỀ LIÊN QUAN

Các phân tích khác trong danh mục này

Gửi Yêu cầu Biểu mẫu