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nitrile- and methyl-containing organic material

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結果番号: 20250421153215411633107 所有者: publicuser コメント: 1
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250421153215411633107 Date: 2025-04-22 02:48:03 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

nitrile- and methyl-containing organic material

General assessment
-
#82401 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. Library consensus explicitly points to nitrile / methyl as the main shared directional clue across the search output.
  2. Several higher-ranking library candidates are small organic molecules or substituted ring systems, supporting a broad organic direction rather than a confident mineral salt conclusion.
  3. The sample shows multiple fingerprint-region absorptions, including bands at 1423 and 1585 cm⁻¹, consistent with the possibility of substituted organic functionality and/or ring-associated vibrations.
Main limitation

The reported top hit, calcium;magnesium;dicarbonate, is not credibly supported because its match score is 0.000 and there is no corroborating reference evidence.

Evidence & interpretation
Evidence

Key evidence

ライブラリリードマッチ
calcium;magnesium;dicarbonate #82401 | match 0.0%
材料の方向性
nitrile- and methyl-containing organic material The ordinary FTIR search does not support a firm identification of this sample as calcium;magnesium;dicarbonate despite that library entry being ranked first, because all reported library similarities are 0.000 and no direct or related literature evidence narrows the assignment. The more chemically supportable reading from the broader library pattern is only a tentative organic direction: a nitrile- and methyl-containing material, possibly with aromatic or ring-containing character. This direction remains broad because the observed bands at 845, 1142, 1243, 1269, 1423, and 1585 cm⁻¹ do not include a clearly reported nitrile stretching band near the usual ~2210–2260 cm⁻¹ region, and the current evidence does not establish the key functional groups required for a specific compound-level conclusion.
Support

Evidence supporting the conclusion

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

  1. Library consensus explicitly points to nitrile / methyl as the main shared directional clue across the search output.
  2. Several higher-ranking library candidates are small organic molecules or substituted ring systems, supporting a broad organic direction rather than a confident mineral salt conclusion.
  3. The sample shows multiple fingerprint-region absorptions, including bands at 1423 and 1585 cm⁻¹, consistent with the possibility of substituted organic functionality and/or ring-associated vibrations.
  4. The top-ranked library name is calcium;magnesium;dicarbonate, but the retrieval confidence is explicitly low and the similarity values for the leading candidates are all 0.000.
  5. The Top-15 library pattern is chemically inconsistent at the compound level, but its stated consensus points toward nitrile / methyl rather than toward a carbonate salt assignment.
  6. The measured spectrum contains bands at 845, 1142, 1243, 1269, 1423, and 1585 cm⁻¹, which are more compatible with an organic fingerprint-region interpretation than with a confident inorganic bicarbonate/carbonate identification on the present evidence.
Limitations

Evidence that limits the conclusion

  • The reported top hit, calcium;magnesium;dicarbonate, is not credibly supported because its match score is 0.000 and there is no corroborating reference evidence.
  • A narrow nitrile assignment is limited because no characteristic nitrile stretching band is reported in the expected ~2210–2260 cm⁻¹ region.
  • The Top-15 candidates are chemically diverse, which weakens any compound-specific conclusion from the library search alone.
  • No direct literature statement or related-literature pattern confirms carbonate, bicarbonate, nitrile, aromatic substitution, or halogenation for this specific sample.
  • The current peak list is sparse and limited to part of the spectrum, so important identifying regions may be missing from the interpretation.
  • The present evidence cannot determine whether the apparent organic direction reflects a pure compound, a mixture, or a contaminated sample.
  • Possible aromatic/ring character is only an inference from the library pattern and the 1585 cm⁻¹ band; it is not established securely from the current evidence.
  • Without the high-wavenumber and nitrile-stretch region, the sample cannot be narrowed safely beyond a broad nitrile- and methyl-containing organic material direction.
Recommendation

Suggested next verification

  • Recollect or review the full FTIR spectrum from about 4000 to 650 cm⁻¹ and specifically inspect the 2210–2260 cm⁻¹ region for a characteristic nitrile band.
  • Check for C-H stretching bands near about 2850–3000 cm⁻¹ to test the methyl-containing organic interpretation.
  • If carbonate or bicarbonate remains a concern, verify whether the spectrum shows the expected strong carbonate-related pattern across the full spectrum rather than relying on the current low-match library hit.
  • Run a repeat measurement after background correction and sample cleaning/preparation review to exclude contamination or mixed-sample effects.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1423 1.00 - - - -
2 · 845 0.18 - - - -
3 · 1243 0.16 - - - -
4 · 1269 0.16 - - - -
5 · 1585 0.14 - - - -
6 · 1142 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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