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weakly matched nitrogen-containing organic material with possible nitrile- or carbonyl-bearing aromatic character

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Nambari ya Matokeo: 20250422075849439257317 Mmiliki: publicuser Maoni: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250422075849439257317 Date: 2025-04-22 14:03:24 Reported by: FTIR.fun Contact: [email protected]

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Top15

Similarity-ranked Top-15 library comparison

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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

weakly matched nitrogen-containing organic material with possible nitrile- or carbonyl-bearing aromatic character

General assessment
-
#73725 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. Library consensus explicitly points to methyl / nitrile as the main retrieval direction.
  2. Several leading candidates contain rings, nitrogen, and carbonyl-related motifs, supporting a broad nitrogen-containing organic interpretation rather than an inorganic-only assignment.
  3. The sample contains a band at 2137 cm-1, which is compatible with a nitrile-region absorption in ordinary FTIR interpretation.
Main limitation

All top library matches have similarity 0.000, indicating an extremely weak retrieval basis.

Evidence & interpretation
Evidence

Key evidence

Mechi inayoongoza ya maktaba
N-[2-[2-(benzoylamino)phenyl]disulfanylphenyl]benzamide #73725 | match 0.0%
Mwelekeo wa nyenzo
weakly matched nitrogen-containing organic material with possible nitrile- or carbonyl-bearing aromatic character The FTIR search does not support a confident compound-level identification for this sample. Although the nearest library entry is N-[2-[2-(benzoylamino)phenyl]disulfanylphenyl]benzamide, all listed library similarities are 0.000 and no direct or related literature evidence narrows the assignment. The most chemically supportable reading is therefore a broad organic direction: a weakly matched nitrogen-containing material with possible nitrile and/or carbonyl functionality, potentially with aromatic character, rather than a defensible identification of the named library compound.
Support

Evidence supporting the conclusion

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

  1. Library consensus explicitly points to methyl / nitrile as the main retrieval direction.
  2. Several leading candidates contain rings, nitrogen, and carbonyl-related motifs, supporting a broad nitrogen-containing organic interpretation rather than an inorganic-only assignment.
  3. The sample contains a band at 2137 cm-1, which is compatible with a nitrile-region absorption in ordinary FTIR interpretation.
  4. The presence of bands near 1629 cm-1 and 2944-2996 cm-1 is consistent with an organic material containing unsaturated and alkyl C-H features.
  5. The library search returned N-[2-[2-(benzoylamino)phenyl]disulfanylphenyl]benzamide as Top-1, but with similarity 0.000, so the name cannot be treated as a reliable identification.
  6. The Top-15 library pattern is highly mixed, but recurring clues include methyl, nitrile, carbonyl-containing, ring-containing, and some aromatic/nitrogen-bearing candidates.
  7. Observed sample bands include a sharp feature near 2137 cm-1, which is compatible with a triple-bond region signal such as nitrile in a broad screening sense, but this is not sufficient on its own for a specific assignment.
  8. Bands near 1629 cm-1 and in the 2944-2996 cm-1 region are consistent with unsaturated and aliphatic C-H containing organic material, while the 669-914 cm-1 region can be compatible with substituted-ring or out-of-plane deformation features.
  9. High-wavenumber bands at 3394, 3624, and 3697 cm-1 indicate O-H and/or N-H type stretching may be present, but their relation to the main organic component is uncertain without stronger matching evidence.
  10. Features near 1786 and 1869 cm-1 suggest a high-frequency carbonyl or combination/overtone region contribution, but the current evidence packet does not establish a unique functional-group assignment.
Limitations

Evidence that limits the conclusion

  • All top library matches have similarity 0.000, indicating an extremely weak retrieval basis.
  • The Top-1 candidate, N-[2-[2-(benzoylamino)phenyl]disulfanylphenyl]benzamide, would imply a much more specific amide/disulfide aromatic structure than is supported by the present evidence packet.
  • The Top-15 list is chemically inconsistent, containing unrelated polymers, salts, heterocycles, chlorinated aromatics, and small molecules, which limits confidence in any narrow conclusion.
  • It remains uncertain whether the 2137 cm-1 band is a true nitrile absorption, another triple-bond-region feature, or an artifact/contribution from a minor component.
  • The relationship between the high-wavenumber O-H/N-H-like bands and the main organic fingerprint is not established.
  • Possible aromatic character is suggested only broadly from the candidate pattern and low-wavenumber band distribution, not from a strong direct match.
  • The sample may be a mixture, contaminated material, or a compound absent from the reference library.
Recommendation

Suggested next verification

  • Re-measure the spectrum after careful background collection and atmospheric compensation, especially because the 2137 cm-1 and high-wavenumber bands are important to the current direction.
  • Inspect the sample for mixture behavior and, if possible, collect replicate FTIR spectra from multiple spots or after purification/separation.
  • Confirm the possible nitrile assignment with complementary Raman or by checking whether the 2137 cm-1 feature persists across repeated measurements.
  • If the sample is expected to be a discrete organic compound, use GC-MS or LC-MS to determine molecular composition before attempting a narrower structural assignment.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1016 1.00 - - - -
2 · 3624 0.89 - - - -
3 · 763 0.64 - - - -
4 · 3697 0.62 - - - -
5 · 2359 0.59 - - - -
6 · 1629 0.52 - - - -
7 · 914 0.51 - - - -
8 · 1382 0.51 - - - -
9 · 1164 0.40 - - - -
10 · 1869 0.28 - - - -
11 · 696 0.26 - - - -
12 · 1786 0.22 - - - -
13 · 2000 0.21 - - - -
14 · 3394 0.17 - - - -
15 · 669 0.17 - - - -
16 · 2996 0.16 - - - -
17 · 1245 0.16 - - - -
18 · 839 0.16 - - - -
19 · 2137 0.15 - - - -
20 · 2944 0.15 - - - -
21 · 2467 0.13 - - - -
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): [(650, 4000)]

Raw spectrum without baseline correction or other processing:

Sample spectrum image
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