Spectrus: Working with temperature‑dependent NMR spectra (VT NMR)

Description
Variable‑temperature (VT) NMR experiments show how spectra change with temperature, revealing dynamic processes (conformational exchange, hydrogen bonding). Spectrus can organize and compare such series.

Solution

1. Acquire NMR spectra at the desired temperature points (e.g., from low to high temperature).
2. Import all VT spectra into a single Spectrus project.
3. Annotate each spectrum with its acquisition temperature in the metadata.
4. Use stacked or overlay views to:
   • Observe coalescence, line broadening, or splitting changes with temperature.
   • Track chemical shift movements and peak intensities.
5. For dynamic processes:
   • Note temperatures where key changes occur (e.g., coalescence temperature).
   • Use appropriate theoretical models (if needed) outside Spectrus to estimate rate constants.
6. Include selected VT spectra and annotations in reports to document temperature‑dependent behavior.