Spectroscopy Interpretation Chain

validated scientific chain v1.0.0 cc-by-sa

Block ID: a2f85995-0e70-471e-9759-75ffdc04c9c0

Community-contributed block. PromptDNA makes no guarantee of output quality or fitness for purpose. User assumes all responsibility for use.

Template

Interpret the spectroscopic data in {spectral_data} to determine or confirm a structure, integrating evidence rather than reading one spectrum in isolation. (1) Extract the molecular formula first where possible (from mass spectrometry's molecular ion and isotope pattern, or from provided elemental analysis), and compute the degree of unsaturation — this constrains every subsequent interpretation and catches impossible proposals early. (2) Read each technique for what it uniquely reveals: IR for functional groups (carbonyl, hydroxyl, and their absence, which is also information), NMR chemical shifts for electronic environment, integration for proton counts, and coupling for connectivity. (3) Assemble fragments consistent with each piece of evidence, keeping a running list of what's assigned and what's unexplained. (4) Reconcile: every signal must be accounted for and no proposed structure may predict a signal that's absent — an unexplained peak or a predicted-but-missing one falsifies the candidate. (5) Distinguish among isomers using the diagnostic differences their spectra would show. (6) State the structure with a confidence level and identify the single additional experiment that would resolve any remaining ambiguity.

Interpret the spectroscopic data in {spectral_data} to determine or confirm a structure, integrating evidence rather than reading one spectrum in isolation. (1) Extract the molecular formula first where possible (from mass spectrometry's molecular ion and isotope pattern, or from provided elemental analysis), and compute the degree of unsaturation — this constrains every subsequent interpretation and catches impossible proposals early. (2) Read each technique for what it uniquely reveals: IR for functional groups (carbonyl, hydroxyl, and their absence, which is also information), NMR chemical shifts for electronic environment, integration for proton counts, and coupling for connectivity. (3) Assemble fragments consistent with each piece of evidence, keeping a running list of what's assigned and what's unexplained. (4) Reconcile: every signal must be accounted for and no proposed structure may predict a signal that's absent — an unexplained peak or a predicted-but-missing one falsifies the candidate. (5) Distinguish among isomers using the diagnostic differences their spectra would show. (6) State the structure with a confidence level and identify the single additional experiment that would resolve any remaining ambiguity.

Variables

Name	Type	Required	Trust level
spectral_data		yes

spectroscopystructure-elucidationanalytical-chemistrychain-of-thought

Ratings

0.0

Overall (0)

0.0

Accuracy

0.0

Consistency

0.0

Clarity

0.0

Efficiency

Benchmarks

Not yet self-validated against any benchmark. Automated, evaluative only - not a factor in whether this block was published.

Submitted by James P FounderMod via mcp · 2026-07-18