Carbon NMR Prediction Tool
Predict 13C NMR chemical shifts and carbon environments for organic structure analysis. The prediction engine is being prepared now, but this page is live for students searching Google for carbon NMR prediction, 13C NMR predictor, carbon chemical shift prediction.
Prediction Input
What the 13C NMR predictor will show
The live tool will estimate carbon environments, broadband-decoupled peak positions, symmetry-equivalent carbons, and carbonyl/sp2/sp3 assignments.
Google Search Input
This page is structured around common Google search inputs students use: compound name, formula, SMILES, solvent, instrument frequency, and NMR type. The live predictor will accept those fields directly.
Common Carbon NMR Shift Ranges
| Environment | Typical Range | Notes |
|---|---|---|
| Alkyl C | 0-50 ppm | sp3 carbon region |
| C-O / C-N | 50-90 ppm | heteroatom-substituted carbon |
| Alkyne C | 65-90 ppm | sp carbon region |
| Alkene / aromatic C | 100-150 ppm | sp2 carbon environments |
| Carbonyl C | 160-220 ppm | esters, acids, aldehydes, ketones |
How Carbon NMR Prediction Will Work
The planned workflow is simple: enter a compound name, formula, or SMILES string, choose the NMR experiment settings, and receive an annotated prediction. The result will include likely peaks, environment labels, and explanations that help students connect spectra to structure.
Until the live prediction model is released, use the reference ranges above to estimate where common organic environments appear. Real spectra may shift with solvent, concentration, hydrogen bonding, conjugation, stereochemistry, and instrument conditions.