top of page

In Loving Memory of
Warren Joseph Hehre (1945 - 2026)
Devoted husband, father, mentor, friend.
The world is less clever in his absence.
Click to explore research applications in


Spartan'26 provides high accuracy C shifts for flexible organic molecules
13
Benchmark Performance ( C):
DELTA50 (gold standard small, rigid-molecule validation):
RMSE: 0.63 ppm
MAE: 0.75 ppm
>500+ Lignin & Cell Wall compounds (DFRC NMR DB)
RMSE: 0.96 ppm
MAE: 0.73 ppm
*across CDCl3-d, acetone-d6, and DMSO-d6
420 CNP (420 flexible published NP's, >200 scaffolds)
RMSE:1.66 ppm
MAE: 1.24 ppm
13
13
bottom of page
