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The Spectrum Could Not Name What the Instrument Could Not Separate
A measurement-aware framework mapped which molecular conformers remain indistinguishable at finite resolution.
Summary
A measurement-aware framework mapped which molecular conformers remain indistinguishable at finite resolution.
A preprint treats conformer assignment as an identifiability problem determined by both the instrument and the uncertainty model. Applied to three audited molecular ensembles, infrared spectra separated all non-mirror pairs under one working model, while mirror partners remained exactly degenerate for the achiral measurements. Under a more conservative stress test, n-pentane developed an additional ambiguity that selected Raman windows could remove. The result is a framework and case analysis, not a claim that infrared measurements are generally sufficient for every molecule or calibration regime.
Why it matters
A measurement-aware framework mapped which molecular conformers remain indistinguishable at finite resolution.
Limits and context
- The result is a framework and case analysis, not a claim that infrared measurements are generally sufficient for every molecule or calibration regime.
Key claims
A measurement-aware framework mapped which molecular conformers remain indistinguishable at finite resolution.
Qualification: The result is a framework and case analysis, not a claim that infrared measurements are generally sufficient for every molecule or calibration regime.
Evidence: source-2026-08-05-016
Sources
- arXiv preprint 2608.02637arXiv · primary research
Corrections
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