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oxygenated and possibly sulfur-containing material with O-H/N-H functionality

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Số kết quả: 20250422120010885839355 Chủ sở hữu: publicuser Bình luận: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250422120010885839355 Date: 2025-04-22 18:06:29 Reported by: FTIR.fun Contact: [email protected]

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Top15

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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

oxygenated and possibly sulfur-containing material with O-H/N-H functionality

General assessment
-
#24370 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. Multiple high-wavenumber bands support the presence of O-H and/or N-H functionality.
  2. The 1152 cm-1 band supports an oxygen-rich functional group environment.
  3. Library consensus metadata mentions S=O / N-H, which is broadly compatible with the observed high-wavenumber X-H region and fingerprint absorption, though only at a very weak level.
Main limitation

The leading library candidate, disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane, has 0.000 similarity and therefore is not a credible direct match.

Evidence & interpretation
Evidence

Key evidence

Kết quả khớp hàng đầu từ thư viện
disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane #24370 | match 0.0%
Hướng vật liệu
oxygenated and possibly sulfur-containing material with O-H/N-H functionality The FTIR evidence does not support a reliable assignment to a specific library compound. The library top hit is effectively non-matching, and the Top-15 candidates are chemically inconsistent with one another. The sample is more defensibly described as an oxygenated material that shows high-wavenumber O-H and/or N-H stretching and strong fingerprint-region absorption that could include S=O contribution, but the present evidence is not sufficient to confirm a specific sulfur compound, phenolic compound, or discrete library entity.
Support

Evidence supporting the conclusion

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

  1. The FTIR evidence does not support a reliable assignment to a specific library compound. The library top hit is effectively non-matching, and the Top-15 candidates are chemically inconsistent with one another. The sample is more defensibly described as an oxygenated material that shows high-wavenumber O-H and/or N-H stretching and strong fingerprint-region absorption that could include S=O contribution, but the present evidence is not sufficient to confirm a specific sulfur compound, phenolic compound, or discrete library entity.
  2. Multiple high-wavenumber bands support the presence of O-H and/or N-H functionality.
  3. The 1152 cm-1 band supports an oxygen-rich functional group environment.
  4. Library consensus metadata mentions S=O / N-H, which is broadly compatible with the observed high-wavenumber X-H region and fingerprint absorption, though only at a very weak level.
  5. Observed bands at 3400, 3562, and 3784 cm-1 indicate high-wavenumber X-H stretching consistent with free or weakly hydrogen-bonded O-H and possibly N-H functionality.
  6. Bands near 1618 and 1684 cm-1 suggest unsaturation and/or a carbonyl-region contribution, but they do not uniquely define a single compound class.
  7. The strong fingerprint-region bands at 981 and 1152 cm-1 are compatible with oxygen-containing functional groups and could overlap with sulfur-oxygen stretching, but the evidence is not specific enough to confirm sulfite-, sulfoxide-, or sulfate-type chemistry.
  8. Additional features at 1795, 1874, 1992, and 2066 cm-1 are unusual for a simple neat organic compound and may reflect overtone/combination structure, matrix effects, or mixed-component behavior.
  9. The Top-15 library pattern contains sulfur-oxygen, fluorinated, halogenated aromatic diol, methoxyphenol, and aliphatic diol candidates, which indicates weak and non-convergent retrieval rather than a coherent material identity.
Limitations

Evidence that limits the conclusion

  • The leading library candidate, disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane, has 0.000 similarity and therefore is not a credible direct match.
  • The Top-15 candidates do not share a single chemically coherent identity; they span inorganic sulfur species, fluorinated organometallic-like compounds, phenolic aromatics, and aliphatic alcohols.
  • If the sample were narrowly assigned as a specific sulfur oxyanion salt, the prominent high-wavenumber O-H/N-H region would remain insufficiently explained.
  • If the sample were narrowly assigned as a phenolic aromatic, the unusual bands above 1790 cm-1 and the overall non-convergent library pattern would still limit confidence.
  • It remains unclear whether the high-wavenumber features arise from O-H, N-H, adsorbed moisture, or a mixture of these contributions.
  • The current spectrum does not securely distinguish between an oxygenated organic material, a sulfur-oxygen-containing material, or a mixed sample.
  • Possible aromatic, carbonyl-like, and sulfur-oxygen contributions are suggested but not firmly established by the available evidence.
Recommendation

Suggested next verification

  • Re-run FTIR on a freshly prepared dry sample and blank the instrument carefully to test whether the 3400-3784 cm-1 features are intrinsic or moisture-related.
  • Inspect the sample in ATR and, if possible, in transmission to see whether the unusual 1795-2066 cm-1 region persists or is an artifact.
  • Compare replicate spectra from different spots to evaluate sample heterogeneity or mixture behavior.
  • If sulfur-containing material is suspected, verify with elemental analysis such as XRF, EDS, or ion chromatography for sulfur-bearing species.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1152 1.00 - - - -
2 · 981 0.49 - - - -
3 · 3562 0.46 - - - -
4 · 1430 0.39 - - - -
5 · 1618 0.30 - - - -
6 · 782 0.29 - - - -
7 · 3400 0.27 - - - -
8 · 1684 0.21 - - - -
9 · 1795 0.20 - - - -
10 · 1874 0.19 - - - -
11 · 3003 0.18 - - - -
12 · 3784 0.17 - - - -
13 · 2876 0.14 - - - -
14 · 2066 0.11 - - - -
15 · 1992 0.10 - - - -
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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