RESULT PAGE
Sulfate/silicon-based inorganic material, but substantial organic spectral features are inconsistent with the library matches
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FTIR Analysis Report
High confidence
Sulfate/silicon-based inorganic material, but substantial organic spectral features are inconsistent with the library matches
Sample & Measurement Parameters
Report No.
20260619130335954883121
Date
2026-06-19 05:11:02
Spectral Range (cm⁻¹)
[(400, 4000)]
Baseline
AsLS baseline correction
Library match
86%
Identification Result
86%The sample's IR spectrum shows a prominent Si–O stretch near 1015 cm⁻¹ and lower-wavenumber bands that align with the sulfate/silicate library direction. However, a strong aliphatic C–H stretch at 2930 cm⁻¹ is absent from all top-15 library candidates, which are exclusively inorganic aluminosilicates or sulfates. This conflict prevents a firm identification
Detailed interpretation
- Top library match: Azure blue #13938
- The 2930 cm⁻¹ C–H stretching band is not present in any library candidate and is incompatible with a purely inorganic sulfate or silicate.
- Library candidate azanium tetrafluoroborate (#47352, similarity 0.75) lacks Si–O and C–H signatures, further highlighting the spectral mismatch for this cluster.
- The exact nature of the organic component cannot be determined from the library alone; it may be a contaminant or part of a hybrid material.
- The library's composition space does not include organic-inorganic hybrids, S-O the retrieved direction may not fully describe the sample.
Library Comparison
Library spectrum will appear here.
Library Search Results — Top 15 Candidates
| Rank | Match % | Compound | SMILES | Spectrum No. | Action |
|---|---|---|---|---|---|
| Loading library candidates... | |||||
Peak Analysis
★ = Literature-supported assignmentAppendix — Raw Spectrum
Discussion
Comments and follow-up evidence
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