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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Library spectrum will appear here.

Infrared spectrum comparison chart. Analysis result: 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

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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

Multiple high-wavenumber bands support the presence of O-H and/or N-H functionality.
The 1152 cm-1 band supports an oxygen-rich functional group environment.
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

Key evidence

库主匹配

disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane #24370 | match 0.0%

材料方向

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.

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.
Multiple high-wavenumber bands support the presence of O-H and/or N-H functionality.
The 1152 cm-1 band supports an oxygen-rich functional group environment.
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.
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.
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.
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.
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.
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:

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

FTIR Spectrum Analysis Report

Similarity-ranked Top-15 library comparison

Reference library candidates

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

Key evidence

Evidence supporting the conclusion

Evidence that limits the conclusion

Suggested next verification

Detected peaks and interpretation

Sample information and raw spectrum

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

Similarity-ranked Top-15 library comparison

Reference library candidates

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

Key evidence

Evidence supporting the conclusion

Evidence that limits the conclusion

Suggested next verification

Detected peaks and interpretation

Sample information and raw spectrum

评论和后续证据

此类别中的其他分析

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